Home / 38,108.90-57,168.89-11,815.76

Finding the Fourth Proportional to 38,108.90, 57,168.89 and 11,815.76

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Solution

The fourth proportional to 38,108.90, 57,168.89 and 11,815.76 is: 17,725.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,108.90 : 57,168.89 = 11,815.76 : x
  2. Step 2: Convert to fraction form
    38,108.90/57,168.89 = 11,815.76/x
  3. Step 3: Cross multiply
    38,108.90x = 57,168.89 × 11,815.76
  4. Step 4: Simplify right side
    38,108.90x = 675,493,538.78
  5. Step 5: Solve for x
    x = 675,493,538.78/38,108.90
  6. Step 6: Final answer
    x = 17,725.35

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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.