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Finding the Fourth Proportional to 18,454.76, 27,690.24 and 9,687.62

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Solution

The fourth proportional to 18,454.76, 27,690.24 and 9,687.62 is: 14,535.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.76 : 27,690.24 = 9,687.62 : x
  2. Step 2: Convert to fraction form
    18,454.76/27,690.24 = 9,687.62/x
  3. Step 3: Cross multiply
    18,454.76x = 27,690.24 × 9,687.62
  4. Step 4: Simplify right side
    18,454.76x = 268,252,522.83
  5. Step 5: Solve for x
    x = 268,252,522.83/18,454.76
  6. Step 6: Final answer
    x = 14,535.68

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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.