Home / 19,945.38-29,885.26-15,811.95

Finding the Fourth Proportional to 19,945.38, 29,885.26 and 15,811.95

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Solution

The fourth proportional to 19,945.38, 29,885.26 and 15,811.95 is: 23,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.38 : 29,885.26 = 15,811.95 : x
  2. Step 2: Convert to fraction form
    19,945.38/29,885.26 = 15,811.95/x
  3. Step 3: Cross multiply
    19,945.38x = 29,885.26 × 15,811.95
  4. Step 4: Simplify right side
    19,945.38x = 472,544,236.86
  5. Step 5: Solve for x
    x = 472,544,236.86/19,945.38
  6. Step 6: Final answer
    x = 23,691.91

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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.