Home / 20,819,387.72-28,679,419.16-17,711,958.70

Finding the Fourth Proportional to 20,819,387.72, 28,679,419.16 and 17,711,958.70

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Solution

The fourth proportional to 20,819,387.72, 28,679,419.16 and 17,711,958.70 is: 24,398,829.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819,387.72 : 28,679,419.16 = 17,711,958.70 : x
  2. Step 2: Convert to fraction form
    20,819,387.72/28,679,419.16 = 17,711,958.70/x
  3. Step 3: Cross multiply
    20,819,387.72x = 28,679,419.16 × 17,711,958.70
  4. Step 4: Simplify right side
    20,819,387.72x = 507,968,687,541,650.44
  5. Step 5: Solve for x
    x = 507,968,687,541,650.44/20,819,387.72
  6. Step 6: Final answer
    x = 24,398,829.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.