Home / 20,422.62-28,184.94-11,471.94

Finding the Fourth Proportional to 20,422.62, 28,184.94 and 11,471.94

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Solution

The fourth proportional to 20,422.62, 28,184.94 and 11,471.94 is: 15,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.62 : 28,184.94 = 11,471.94 : x
  2. Step 2: Convert to fraction form
    20,422.62/28,184.94 = 11,471.94/x
  3. Step 3: Cross multiply
    20,422.62x = 28,184.94 × 11,471.94
  4. Step 4: Simplify right side
    20,422.62x = 323,335,940.58
  5. Step 5: Solve for x
    x = 323,335,940.58/20,422.62
  6. Step 6: Final answer
    x = 15,832.25

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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.