Home / 38,654.20-57,981.30-18,922.60

Finding the Fourth Proportional to 38,654.20, 57,981.30 and 18,922.60

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Solution

The fourth proportional to 38,654.20, 57,981.30 and 18,922.60 is: 28,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,654.20 : 57,981.30 = 18,922.60 : x
  2. Step 2: Convert to fraction form
    38,654.20/57,981.30 = 18,922.60/x
  3. Step 3: Cross multiply
    38,654.20x = 57,981.30 × 18,922.60
  4. Step 4: Simplify right side
    38,654.20x = 1,097,156,947.38
  5. Step 5: Solve for x
    x = 1,097,156,947.38/38,654.20
  6. Step 6: Final answer
    x = 28,383.90

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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.