Home / 21,311,421,695.80-31,967,132,543.70-20,984,904,345.40

Finding the Fourth Proportional to 21,311,421,695.80, 31,967,132,543.70 and 20,984,904,345.40

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Solution

The fourth proportional to 21,311,421,695.80, 31,967,132,543.70 and 20,984,904,345.40 is: 31,477,356,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311,421,695.80 : 31,967,132,543.70 = 20,984,904,345.40 : x
  2. Step 2: Convert to fraction form
    21,311,421,695.80/31,967,132,543.70 = 20,984,904,345.40/x
  3. Step 3: Cross multiply
    21,311,421,695.80x = 31,967,132,543.70 × 20,984,904,345.40
  4. Step 4: Simplify right side
    21,311,421,695.80x = 670,827,218,626,267,971,584
  5. Step 5: Solve for x
    x = 670,827,218,626,267,971,584/21,311,421,695.80
  6. Step 6: Final answer
    x = 31,477,356,518.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.