Home / 38,891.60-58,349.51-13,931.87

Finding the Fourth Proportional to 38,891.60, 58,349.51 and 13,931.87

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Solution

The fourth proportional to 38,891.60, 58,349.51 and 13,931.87 is: 20,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,891.60 : 58,349.51 = 13,931.87 : x
  2. Step 2: Convert to fraction form
    38,891.60/58,349.51 = 13,931.87/x
  3. Step 3: Cross multiply
    38,891.60x = 58,349.51 × 13,931.87
  4. Step 4: Simplify right side
    38,891.60x = 812,917,478.72
  5. Step 5: Solve for x
    x = 812,917,478.72/38,891.60
  6. Step 6: Final answer
    x = 20,902.13

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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.