Home / 28,215.95-38,932.25-16,115.76

Finding the Fourth Proportional to 28,215.95, 38,932.25 and 16,115.76

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Solution

The fourth proportional to 28,215.95, 38,932.25 and 16,115.76 is: 22,236.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.95 : 38,932.25 = 16,115.76 : x
  2. Step 2: Convert to fraction form
    28,215.95/38,932.25 = 16,115.76/x
  3. Step 3: Cross multiply
    28,215.95x = 38,932.25 × 16,115.76
  4. Step 4: Simplify right side
    28,215.95x = 627,422,716.68
  5. Step 5: Solve for x
    x = 627,422,716.68/28,215.95
  6. Step 6: Final answer
    x = 22,236.46

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Double scale
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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.