Home / 28,015.38-38,659.41-15,440.13

Finding the Fourth Proportional to 28,015.38, 38,659.41 and 15,440.13

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Solution

The fourth proportional to 28,015.38, 38,659.41 and 15,440.13 is: 21,306.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.38 : 38,659.41 = 15,440.13 : x
  2. Step 2: Convert to fraction form
    28,015.38/38,659.41 = 15,440.13/x
  3. Step 3: Cross multiply
    28,015.38x = 38,659.41 × 15,440.13
  4. Step 4: Simplify right side
    28,015.38x = 596,906,316.12
  5. Step 5: Solve for x
    x = 596,906,316.12/28,015.38
  6. Step 6: Final answer
    x = 21,306.38

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Half scale
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Double scale
Find fourth proportional to 28,016.38, 38,660.79 and 15,441.13
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.