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Finding the Fourth Proportional to 18,717.76, 28,084.92 and 14,551.57

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Solution

The fourth proportional to 18,717.76, 28,084.92 and 14,551.57 is: 21,833.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.76 : 28,084.92 = 14,551.57 : x
  2. Step 2: Convert to fraction form
    18,717.76/28,084.92 = 14,551.57/x
  3. Step 3: Cross multiply
    18,717.76x = 28,084.92 × 14,551.57
  4. Step 4: Simplify right side
    18,717.76x = 408,679,679.32
  5. Step 5: Solve for x
    x = 408,679,679.32/18,717.76
  6. Step 6: Final answer
    x = 21,833.79

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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.