Home / 20,414.85-28,172.51-11,463.21

Finding the Fourth Proportional to 20,414.85, 28,172.51 and 11,463.21

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Solution

The fourth proportional to 20,414.85, 28,172.51 and 11,463.21 is: 15,819.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.85 : 28,172.51 = 11,463.21 : x
  2. Step 2: Convert to fraction form
    20,414.85/28,172.51 = 11,463.21/x
  3. Step 3: Cross multiply
    20,414.85x = 28,172.51 × 11,463.21
  4. Step 4: Simplify right side
    20,414.85x = 322,947,398.36
  5. Step 5: Solve for x
    x = 322,947,398.36/20,414.85
  6. Step 6: Final answer
    x = 15,819.24

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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.