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Finding the Fourth Proportional to 18,347.12, 27,517.42 and 8,349.55

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Solution

The fourth proportional to 18,347.12, 27,517.42 and 8,349.55 is: 12,522.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.12 : 27,517.42 = 8,349.55 : x
  2. Step 2: Convert to fraction form
    18,347.12/27,517.42 = 8,349.55/x
  3. Step 3: Cross multiply
    18,347.12x = 27,517.42 × 8,349.55
  4. Step 4: Simplify right side
    18,347.12x = 229,758,074.16
  5. Step 5: Solve for x
    x = 229,758,074.16/18,347.12
  6. Step 6: Final answer
    x = 12,522.84

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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.