Home / 14,540.40-21,781.80-8,679.60

Finding the Fourth Proportional to 14,540.40, 21,781.80 and 8,679.60

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Solution

The fourth proportional to 14,540.40, 21,781.80 and 8,679.60 is: 13,002.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,540.40 : 21,781.80 = 8,679.60 : x
  2. Step 2: Convert to fraction form
    14,540.40/21,781.80 = 8,679.60/x
  3. Step 3: Cross multiply
    14,540.40x = 21,781.80 × 8,679.60
  4. Step 4: Simplify right side
    14,540.40x = 189,057,311.28
  5. Step 5: Solve for x
    x = 189,057,311.28/14,540.40
  6. Step 6: Final answer
    x = 13,002.21

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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.