Home / 20,322.66-28,039.77-13,951.20

Finding the Fourth Proportional to 20,322.66, 28,039.77 and 13,951.20

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Solution

The fourth proportional to 20,322.66, 28,039.77 and 13,951.20 is: 19,248.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.66 : 28,039.77 = 13,951.20 : x
  2. Step 2: Convert to fraction form
    20,322.66/28,039.77 = 13,951.20/x
  3. Step 3: Cross multiply
    20,322.66x = 28,039.77 × 13,951.20
  4. Step 4: Simplify right side
    20,322.66x = 391,188,439.22
  5. Step 5: Solve for x
    x = 391,188,439.22/20,322.66
  6. Step 6: Final answer
    x = 19,248.88

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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.