Home / 21,251.29-31,847.78-13,446.13

Finding the Fourth Proportional to 21,251.29, 31,847.78 and 13,446.13

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Solution

The fourth proportional to 21,251.29, 31,847.78 and 13,446.13 is: 20,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.29 : 31,847.78 = 13,446.13 : x
  2. Step 2: Convert to fraction form
    21,251.29/31,847.78 = 13,446.13/x
  3. Step 3: Cross multiply
    21,251.29x = 31,847.78 × 13,446.13
  4. Step 4: Simplify right side
    21,251.29x = 428,229,322.86
  5. Step 5: Solve for x
    x = 428,229,322.86/21,251.29
  6. Step 6: Final answer
    x = 20,150.74

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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.