Home / 21,070,070.70-31,607,637.72-7,420,397.02

Finding the Fourth Proportional to 21,070,070.70, 31,607,637.72 and 7,420,397.02

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Solution

The fourth proportional to 21,070,070.70, 31,607,637.72 and 7,420,397.02 is: 11,131,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070,070.70 : 31,607,637.72 = 7,420,397.02 : x
  2. Step 2: Convert to fraction form
    21,070,070.70/31,607,637.72 = 7,420,397.02/x
  3. Step 3: Cross multiply
    21,070,070.70x = 31,607,637.72 × 7,420,397.02
  4. Step 4: Simplify right side
    21,070,070.70x = 234,541,220,746,727.56
  5. Step 5: Solve for x
    x = 234,541,220,746,727.56/21,070,070.70
  6. Step 6: Final answer
    x = 11,131,487.13

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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.