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Finding the Fourth Proportional to 18,746.73, 28,121.73 and 7,654.17

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Solution

The fourth proportional to 18,746.73, 28,121.73 and 7,654.17 is: 11,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,746.73 : 28,121.73 = 7,654.17 : x
  2. Step 2: Convert to fraction form
    18,746.73/28,121.73 = 7,654.17/x
  3. Step 3: Cross multiply
    18,746.73x = 28,121.73 × 7,654.17
  4. Step 4: Simplify right side
    18,746.73x = 215,248,502.11
  5. Step 5: Solve for x
    x = 215,248,502.11/18,746.73
  6. Step 6: Final answer
    x = 11,481.92

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1.5x scale

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.