Home / 19,331.11-28,947.03-13,399.53

Finding the Fourth Proportional to 19,331.11, 28,947.03 and 13,399.53

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Solution

The fourth proportional to 19,331.11, 28,947.03 and 13,399.53 is: 20,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.11 : 28,947.03 = 13,399.53 : x
  2. Step 2: Convert to fraction form
    19,331.11/28,947.03 = 13,399.53/x
  3. Step 3: Cross multiply
    19,331.11x = 28,947.03 × 13,399.53
  4. Step 4: Simplify right side
    19,331.11x = 387,876,596.90
  5. Step 5: Solve for x
    x = 387,876,596.90/19,331.11
  6. Step 6: Final answer
    x = 20,064.89

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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.