Home / 19,715.14-29,557-11,385.70

Finding the Fourth Proportional to 19,715.14, 29,557 and 11,385.70

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Solution

The fourth proportional to 19,715.14, 29,557 and 11,385.70 is: 17,069.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.14 : 29,557 = 11,385.70 : x
  2. Step 2: Convert to fraction form
    19,715.14/29,557 = 11,385.70/x
  3. Step 3: Cross multiply
    19,715.14x = 29,557 × 11,385.70
  4. Step 4: Simplify right side
    19,715.14x = 336,527,134.90
  5. Step 5: Solve for x
    x = 336,527,134.90/19,715.14
  6. Step 6: Final answer
    x = 17,069.48

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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.