Home / 20,612.87-28,445.22-11,414.11

Finding the Fourth Proportional to 20,612.87, 28,445.22 and 11,414.11

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Solution

The fourth proportional to 20,612.87, 28,445.22 and 11,414.11 is: 15,751.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.87 : 28,445.22 = 11,414.11 : x
  2. Step 2: Convert to fraction form
    20,612.87/28,445.22 = 11,414.11/x
  3. Step 3: Cross multiply
    20,612.87x = 28,445.22 × 11,414.11
  4. Step 4: Simplify right side
    20,612.87x = 324,676,798.94
  5. Step 5: Solve for x
    x = 324,676,798.94/20,612.87
  6. Step 6: Final answer
    x = 15,751.17

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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.