Home / 12,312,001.80-18,468,002.70-5,121,145.80

Finding the Fourth Proportional to 12,312,001.80, 18,468,002.70 and 5,121,145.80

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Solution

The fourth proportional to 12,312,001.80, 18,468,002.70 and 5,121,145.80 is: 7,681,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312,001.80 : 18,468,002.70 = 5,121,145.80 : x
  2. Step 2: Convert to fraction form
    12,312,001.80/18,468,002.70 = 5,121,145.80/x
  3. Step 3: Cross multiply
    12,312,001.80x = 18,468,002.70 × 5,121,145.80
  4. Step 4: Simplify right side
    12,312,001.80x = 94,577,334,461,493.66
  5. Step 5: Solve for x
    x = 94,577,334,461,493.66/12,312,001.80
  6. Step 6: Final answer
    x = 7,681,718.70

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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.