Home / 38,487.52-57,731.64-12,192.40

Finding the Fourth Proportional to 38,487.52, 57,731.64 and 12,192.40

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Solution

The fourth proportional to 38,487.52, 57,731.64 and 12,192.40 is: 18,288.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,487.52 : 57,731.64 = 12,192.40 : x
  2. Step 2: Convert to fraction form
    38,487.52/57,731.64 = 12,192.40/x
  3. Step 3: Cross multiply
    38,487.52x = 57,731.64 × 12,192.40
  4. Step 4: Simplify right side
    38,487.52x = 703,887,247.54
  5. Step 5: Solve for x
    x = 703,887,247.54/38,487.52
  6. Step 6: Final answer
    x = 18,288.71

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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.