Home / 38,716.72-57,981.32-19,691.36

Finding the Fourth Proportional to 38,716.72, 57,981.32 and 19,691.36

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Solution

The fourth proportional to 38,716.72, 57,981.32 and 19,691.36 is: 29,489.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,716.72 : 57,981.32 = 19,691.36 : x
  2. Step 2: Convert to fraction form
    38,716.72/57,981.32 = 19,691.36/x
  3. Step 3: Cross multiply
    38,716.72x = 57,981.32 × 19,691.36
  4. Step 4: Simplify right side
    38,716.72x = 1,141,731,045.40
  5. Step 5: Solve for x
    x = 1,141,731,045.40/38,716.72
  6. Step 6: Final answer
    x = 29,489.35

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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.