Home / 31,742.28-47,616.59-11,757.15

Finding the Fourth Proportional to 31,742.28, 47,616.59 and 11,757.15

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Solution

The fourth proportional to 31,742.28, 47,616.59 and 11,757.15 is: 17,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,742.28 : 47,616.59 = 11,757.15 : x
  2. Step 2: Convert to fraction form
    31,742.28/47,616.59 = 11,757.15/x
  3. Step 3: Cross multiply
    31,742.28x = 47,616.59 × 11,757.15
  4. Step 4: Simplify right side
    31,742.28x = 559,835,391.12
  5. Step 5: Solve for x
    x = 559,835,391.12/31,742.28
  6. Step 6: Final answer
    x = 17,636.90

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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.