Home / 19,641.36-27,115.12-15,155.04

Finding the Fourth Proportional to 19,641.36, 27,115.12 and 15,155.04

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Solution

The fourth proportional to 19,641.36, 27,115.12 and 15,155.04 is: 20,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641.36 : 27,115.12 = 15,155.04 : x
  2. Step 2: Convert to fraction form
    19,641.36/27,115.12 = 15,155.04/x
  3. Step 3: Cross multiply
    19,641.36x = 27,115.12 × 15,155.04
  4. Step 4: Simplify right side
    19,641.36x = 410,930,728.20
  5. Step 5: Solve for x
    x = 410,930,728.20/19,641.36
  6. Step 6: Final answer
    x = 20,921.70

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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.