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Finding the Fourth Proportional to 18,479.53, 27,719.70 and 8,616.16

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Solution

The fourth proportional to 18,479.53, 27,719.70 and 8,616.16 is: 12,924.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.53 : 27,719.70 = 8,616.16 : x
  2. Step 2: Convert to fraction form
    18,479.53/27,719.70 = 8,616.16/x
  3. Step 3: Cross multiply
    18,479.53x = 27,719.70 × 8,616.16
  4. Step 4: Simplify right side
    18,479.53x = 238,837,370.35
  5. Step 5: Solve for x
    x = 238,837,370.35/18,479.53
  6. Step 6: Final answer
    x = 12,924.43

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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.