Home / 14,520.78-21,781.26-5,755.68

Finding the Fourth Proportional to 14,520.78, 21,781.26 and 5,755.68

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Solution

The fourth proportional to 14,520.78, 21,781.26 and 5,755.68 is: 8,633.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.78 : 21,781.26 = 5,755.68 : x
  2. Step 2: Convert to fraction form
    14,520.78/21,781.26 = 5,755.68/x
  3. Step 3: Cross multiply
    14,520.78x = 21,781.26 × 5,755.68
  4. Step 4: Simplify right side
    14,520.78x = 125,365,962.56
  5. Step 5: Solve for x
    x = 125,365,962.56/14,520.78
  6. Step 6: Final answer
    x = 8,633.56

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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.