Home / 28,427.52-39,229.50-15,681.95

Finding the Fourth Proportional to 28,427.52, 39,229.50 and 15,681.95

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Solution

The fourth proportional to 28,427.52, 39,229.50 and 15,681.95 is: 21,640.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.52 : 39,229.50 = 15,681.95 : x
  2. Step 2: Convert to fraction form
    28,427.52/39,229.50 = 15,681.95/x
  3. Step 3: Cross multiply
    28,427.52x = 39,229.50 × 15,681.95
  4. Step 4: Simplify right side
    28,427.52x = 615,194,861.38
  5. Step 5: Solve for x
    x = 615,194,861.38/28,427.52
  6. Step 6: Final answer
    x = 21,640.82

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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.