Home / 22,720.20-31,350.65-12,647.24

Finding the Fourth Proportional to 22,720.20, 31,350.65 and 12,647.24

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Solution

The fourth proportional to 22,720.20, 31,350.65 and 12,647.24 is: 17,451.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.20 : 31,350.65 = 12,647.24 : x
  2. Step 2: Convert to fraction form
    22,720.20/31,350.65 = 12,647.24/x
  3. Step 3: Cross multiply
    22,720.20x = 31,350.65 × 12,647.24
  4. Step 4: Simplify right side
    22,720.20x = 396,499,092.28
  5. Step 5: Solve for x
    x = 396,499,092.28/22,720.20
  6. Step 6: Final answer
    x = 17,451.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.