Home / 20,912,637.28-28,856,050.56-13,071,221.68

Finding the Fourth Proportional to 20,912,637.28, 28,856,050.56 and 13,071,221.68

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Solution

The fourth proportional to 20,912,637.28, 28,856,050.56 and 13,071,221.68 is: 18,036,167.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,637.28 : 28,856,050.56 = 13,071,221.68 : x
  2. Step 2: Convert to fraction form
    20,912,637.28/28,856,050.56 = 13,071,221.68/x
  3. Step 3: Cross multiply
    20,912,637.28x = 28,856,050.56 × 13,071,221.68
  4. Step 4: Simplify right side
    20,912,637.28x = 377,183,833,679,048.12
  5. Step 5: Solve for x
    x = 377,183,833,679,048.12/20,912,637.28
  6. Step 6: Final answer
    x = 18,036,167.73

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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.