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Finding the Fourth Proportional to 18,627.46, 27,903.76 and 8,618.18

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Solution

The fourth proportional to 18,627.46, 27,903.76 and 8,618.18 is: 12,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.46 : 27,903.76 = 8,618.18 : x
  2. Step 2: Convert to fraction form
    18,627.46/27,903.76 = 8,618.18/x
  3. Step 3: Cross multiply
    18,627.46x = 27,903.76 × 8,618.18
  4. Step 4: Simplify right side
    18,627.46x = 240,479,626.36
  5. Step 5: Solve for x
    x = 240,479,626.36/18,627.46
  6. Step 6: Final answer
    x = 12,909.95

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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.