Home / 20,952.28-31,425.18-13,608.82

Finding the Fourth Proportional to 20,952.28, 31,425.18 and 13,608.82

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Solution

The fourth proportional to 20,952.28, 31,425.18 and 13,608.82 is: 20,411.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.28 : 31,425.18 = 13,608.82 : x
  2. Step 2: Convert to fraction form
    20,952.28/31,425.18 = 13,608.82/x
  3. Step 3: Cross multiply
    20,952.28x = 31,425.18 × 13,608.82
  4. Step 4: Simplify right side
    20,952.28x = 427,659,618.09
  5. Step 5: Solve for x
    x = 427,659,618.09/20,952.28
  6. Step 6: Final answer
    x = 20,411.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.