Home / 28,425.89-39,227.19-15,680.27

Finding the Fourth Proportional to 28,425.89, 39,227.19 and 15,680.27

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Solution

The fourth proportional to 28,425.89, 39,227.19 and 15,680.27 is: 21,638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.89 : 39,227.19 = 15,680.27 : x
  2. Step 2: Convert to fraction form
    28,425.89/39,227.19 = 15,680.27/x
  3. Step 3: Cross multiply
    28,425.89x = 39,227.19 × 15,680.27
  4. Step 4: Simplify right side
    28,425.89x = 615,092,734.41
  5. Step 5: Solve for x
    x = 615,092,734.41/28,425.89
  6. Step 6: Final answer
    x = 21,638.47

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Half scale
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Double scale
Find fourth proportional to 28,426.89, 39,228.57 and 15,681.27
Similar ratio
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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.