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Finding the Fourth Proportional to 23,998.40, 36,008.40 and 8,427.20

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Solution

The fourth proportional to 23,998.40, 36,008.40 and 8,427.20 is: 12,644.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,998.40 : 36,008.40 = 8,427.20 : x
  2. Step 2: Convert to fraction form
    23,998.40/36,008.40 = 8,427.20/x
  3. Step 3: Cross multiply
    23,998.40x = 36,008.40 × 8,427.20
  4. Step 4: Simplify right side
    23,998.40x = 303,449,988.48
  5. Step 5: Solve for x
    x = 303,449,988.48/23,998.40
  6. Step 6: Final answer
    x = 12,644.59

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Similar ratio
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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.