Home / 28,013.92-38,657.46-15,438.76

Finding the Fourth Proportional to 28,013.92, 38,657.46 and 15,438.76

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Solution

The fourth proportional to 28,013.92, 38,657.46 and 15,438.76 is: 21,304.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.92 : 38,657.46 = 15,438.76 : x
  2. Step 2: Convert to fraction form
    28,013.92/38,657.46 = 15,438.76/x
  3. Step 3: Cross multiply
    28,013.92x = 38,657.46 × 15,438.76
  4. Step 4: Simplify right side
    28,013.92x = 596,823,247.15
  5. Step 5: Solve for x
    x = 596,823,247.15/28,013.92
  6. Step 6: Final answer
    x = 21,304.52

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Half scale
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Double scale
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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.