Home / 13,128.53-19,691.96-5,337.14

Finding the Fourth Proportional to 13,128.53, 19,691.96 and 5,337.14

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Solution

The fourth proportional to 13,128.53, 19,691.96 and 5,337.14 is: 8,005.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.53 : 19,691.96 = 5,337.14 : x
  2. Step 2: Convert to fraction form
    13,128.53/19,691.96 = 5,337.14/x
  3. Step 3: Cross multiply
    13,128.53x = 19,691.96 × 5,337.14
  4. Step 4: Simplify right side
    13,128.53x = 105,098,622.25
  5. Step 5: Solve for x
    x = 105,098,622.25/13,128.53
  6. Step 6: Final answer
    x = 8,005.36

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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.