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Finding the Fourth Proportional to 15,781.80, 23,672.70 and 10,824.60

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Solution

The fourth proportional to 15,781.80, 23,672.70 and 10,824.60 is: 16,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.80 : 23,672.70 = 10,824.60 : x
  2. Step 2: Convert to fraction form
    15,781.80/23,672.70 = 10,824.60/x
  3. Step 3: Cross multiply
    15,781.80x = 23,672.70 × 10,824.60
  4. Step 4: Simplify right side
    15,781.80x = 256,247,508.42
  5. Step 5: Solve for x
    x = 256,247,508.42/15,781.80
  6. Step 6: Final answer
    x = 16,236.90

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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.