Home / 21,280,444.20-31,920,666.30-18,509,077.80

Finding the Fourth Proportional to 21,280,444.20, 31,920,666.30 and 18,509,077.80

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Solution

The fourth proportional to 21,280,444.20, 31,920,666.30 and 18,509,077.80 is: 27,763,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280,444.20 : 31,920,666.30 = 18,509,077.80 : x
  2. Step 2: Convert to fraction form
    21,280,444.20/31,920,666.30 = 18,509,077.80/x
  3. Step 3: Cross multiply
    21,280,444.20x = 31,920,666.30 × 18,509,077.80
  4. Step 4: Simplify right side
    21,280,444.20x = 590,822,095,974,538.12
  5. Step 5: Solve for x
    x = 590,822,095,974,538.12/21,280,444.20
  6. Step 6: Final answer
    x = 27,763,616.70

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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.