Home / 12,520.22-18,781.36-5,499.27

Finding the Fourth Proportional to 12,520.22, 18,781.36 and 5,499.27

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Solution

The fourth proportional to 12,520.22, 18,781.36 and 5,499.27 is: 8,249.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.22 : 18,781.36 = 5,499.27 : x
  2. Step 2: Convert to fraction form
    12,520.22/18,781.36 = 5,499.27/x
  3. Step 3: Cross multiply
    12,520.22x = 18,781.36 × 5,499.27
  4. Step 4: Simplify right side
    12,520.22x = 103,283,648.20
  5. Step 5: Solve for x
    x = 103,283,648.20/12,520.22
  6. Step 6: Final answer
    x = 8,249.35

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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.