Home / 12,248.60-18,344.10-8,331.80

Finding the Fourth Proportional to 12,248.60, 18,344.10 and 8,331.80

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Solution

The fourth proportional to 12,248.60, 18,344.10 and 8,331.80 is: 12,478.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,248.60 : 18,344.10 = 8,331.80 : x
  2. Step 2: Convert to fraction form
    12,248.60/18,344.10 = 8,331.80/x
  3. Step 3: Cross multiply
    12,248.60x = 18,344.10 × 8,331.80
  4. Step 4: Simplify right side
    12,248.60x = 152,839,372.38
  5. Step 5: Solve for x
    x = 152,839,372.38/12,248.60
  6. Step 6: Final answer
    x = 12,478.11

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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.