Home / 21,049.92-31,523.40-13,632.12

Finding the Fourth Proportional to 21,049.92, 31,523.40 and 13,632.12

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Solution

The fourth proportional to 21,049.92, 31,523.40 and 13,632.12 is: 20,414.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.92 : 31,523.40 = 13,632.12 : x
  2. Step 2: Convert to fraction form
    21,049.92/31,523.40 = 13,632.12/x
  3. Step 3: Cross multiply
    21,049.92x = 31,523.40 × 13,632.12
  4. Step 4: Simplify right side
    21,049.92x = 429,730,771.61
  5. Step 5: Solve for x
    x = 429,730,771.61/21,049.92
  6. Step 6: Final answer
    x = 20,414.84

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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.