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Finding the Fourth Proportional to 38,951.97, 58,482.36 and 19,989.87

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Solution

The fourth proportional to 38,951.97, 58,482.36 and 19,989.87 is: 30,012.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,951.97 : 58,482.36 = 19,989.87 : x
  2. Step 2: Convert to fraction form
    38,951.97/58,482.36 = 19,989.87/x
  3. Step 3: Cross multiply
    38,951.97x = 58,482.36 × 19,989.87
  4. Step 4: Simplify right side
    38,951.97x = 1,169,054,773.69
  5. Step 5: Solve for x
    x = 1,169,054,773.69/38,951.97
  6. Step 6: Final answer
    x = 30,012.73

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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.