Home / 15,189.29-20,961.23-8,474.92

Finding the Fourth Proportional to 15,189.29, 20,961.23 and 8,474.92

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Solution

The fourth proportional to 15,189.29, 20,961.23 and 8,474.92 is: 11,695.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.29 : 20,961.23 = 8,474.92 : x
  2. Step 2: Convert to fraction form
    15,189.29/20,961.23 = 8,474.92/x
  3. Step 3: Cross multiply
    15,189.29x = 20,961.23 × 8,474.92
  4. Step 4: Simplify right side
    15,189.29x = 177,644,747.35
  5. Step 5: Solve for x
    x = 177,644,747.35/15,189.29
  6. Step 6: Final answer
    x = 11,695.40

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Double scale
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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.