Home / 22,581.20-31,161.96-12,511.28

Finding the Fourth Proportional to 22,581.20, 31,161.96 and 12,511.28

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Solution

The fourth proportional to 22,581.20, 31,161.96 and 12,511.28 is: 17,265.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,581.20 : 31,161.96 = 12,511.28 : x
  2. Step 2: Convert to fraction form
    22,581.20/31,161.96 = 12,511.28/x
  3. Step 3: Cross multiply
    22,581.20x = 31,161.96 × 12,511.28
  4. Step 4: Simplify right side
    22,581.20x = 389,876,006.91
  5. Step 5: Solve for x
    x = 389,876,006.91/22,581.20
  6. Step 6: Final answer
    x = 17,265.51

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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.