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Finding the Fourth Proportional to 15,130.92, 20,882.50 and 9,162.42

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Solution

The fourth proportional to 15,130.92, 20,882.50 and 9,162.42 is: 12,645.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.92 : 20,882.50 = 9,162.42 : x
  2. Step 2: Convert to fraction form
    15,130.92/20,882.50 = 9,162.42/x
  3. Step 3: Cross multiply
    15,130.92x = 20,882.50 × 9,162.42
  4. Step 4: Simplify right side
    15,130.92x = 191,334,235.65
  5. Step 5: Solve for x
    x = 191,334,235.65/15,130.92
  6. Step 6: Final answer
    x = 12,645.25

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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.