Home / 38,789.26-58,129.65-20,981.46

Finding the Fourth Proportional to 38,789.26, 58,129.65 and 20,981.46

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Solution

The fourth proportional to 38,789.26, 58,129.65 and 20,981.46 is: 31,442.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,789.26 : 58,129.65 = 20,981.46 : x
  2. Step 2: Convert to fraction form
    38,789.26/58,129.65 = 20,981.46/x
  3. Step 3: Cross multiply
    38,789.26x = 58,129.65 × 20,981.46
  4. Step 4: Simplify right side
    38,789.26x = 1,219,644,926.29
  5. Step 5: Solve for x
    x = 1,219,644,926.29/38,789.26
  6. Step 6: Final answer
    x = 31,442.85

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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.