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Finding the Fourth Proportional to 18,234.60, 25,154.10 and 12,559.59

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Solution

The fourth proportional to 18,234.60, 25,154.10 and 12,559.59 is: 17,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,234.60 : 25,154.10 = 12,559.59 : x
  2. Step 2: Convert to fraction form
    18,234.60/25,154.10 = 12,559.59/x
  3. Step 3: Cross multiply
    18,234.60x = 25,154.10 × 12,559.59
  4. Step 4: Simplify right side
    18,234.60x = 315,925,057.05
  5. Step 5: Solve for x
    x = 315,925,057.05/18,234.60
  6. Step 6: Final answer
    x = 17,325.58

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.