Home / 38,691.36-58,031.28-12,393.36

Finding the Fourth Proportional to 38,691.36, 58,031.28 and 12,393.36

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Solution

The fourth proportional to 38,691.36, 58,031.28 and 12,393.36 is: 18,588.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,691.36 : 58,031.28 = 12,393.36 : x
  2. Step 2: Convert to fraction form
    38,691.36/58,031.28 = 12,393.36/x
  3. Step 3: Cross multiply
    38,691.36x = 58,031.28 × 12,393.36
  4. Step 4: Simplify right side
    38,691.36x = 719,202,544.30
  5. Step 5: Solve for x
    x = 719,202,544.30/38,691.36
  6. Step 6: Final answer
    x = 18,588.19

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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.