Home / 20,711,372.74-28,579,199.56-11,890,337.87

Finding the Fourth Proportional to 20,711,372.74, 28,579,199.56 and 11,890,337.87

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Solution

The fourth proportional to 20,711,372.74, 28,579,199.56 and 11,890,337.87 is: 16,407,234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711,372.74 : 28,579,199.56 = 11,890,337.87 : x
  2. Step 2: Convert to fraction form
    20,711,372.74/28,579,199.56 = 11,890,337.87/x
  3. Step 3: Cross multiply
    20,711,372.74x = 28,579,199.56 × 11,890,337.87
  4. Step 4: Simplify right side
    20,711,372.74x = 339,816,338,864,277.50
  5. Step 5: Solve for x
    x = 339,816,338,864,277.50/20,711,372.74
  6. Step 6: Final answer
    x = 16,407,234.00

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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.