Home / 12,624.60-18,944.10-8,731.80

Finding the Fourth Proportional to 12,624.60, 18,944.10 and 8,731.80

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Solution

The fourth proportional to 12,624.60, 18,944.10 and 8,731.80 is: 13,102.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.60 : 18,944.10 = 8,731.80 : x
  2. Step 2: Convert to fraction form
    12,624.60/18,944.10 = 8,731.80/x
  3. Step 3: Cross multiply
    12,624.60x = 18,944.10 × 8,731.80
  4. Step 4: Simplify right side
    12,624.60x = 165,416,092.38
  5. Step 5: Solve for x
    x = 165,416,092.38/12,624.60
  6. Step 6: Final answer
    x = 13,102.68

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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.