Home / 38,690.60-58,052.30-21,139.92

Finding the Fourth Proportional to 38,690.60, 58,052.30 and 21,139.92

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Solution

The fourth proportional to 38,690.60, 58,052.30 and 21,139.92 is: 31,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.60 : 58,052.30 = 21,139.92 : x
  2. Step 2: Convert to fraction form
    38,690.60/58,052.30 = 21,139.92/x
  3. Step 3: Cross multiply
    38,690.60x = 58,052.30 × 21,139.92
  4. Step 4: Simplify right side
    38,690.60x = 1,227,221,221.94
  5. Step 5: Solve for x
    x = 1,227,221,221.94/38,690.60
  6. Step 6: Final answer
    x = 31,718.85

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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.