Home / 19,892.16-27,451.20-11,508.80

Finding the Fourth Proportional to 19,892.16, 27,451.20 and 11,508.80

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Solution

The fourth proportional to 19,892.16, 27,451.20 and 11,508.80 is: 15,882.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,892.16 : 27,451.20 = 11,508.80 : x
  2. Step 2: Convert to fraction form
    19,892.16/27,451.20 = 11,508.80/x
  3. Step 3: Cross multiply
    19,892.16x = 27,451.20 × 11,508.80
  4. Step 4: Simplify right side
    19,892.16x = 315,930,370.56
  5. Step 5: Solve for x
    x = 315,930,370.56/19,892.16
  6. Step 6: Final answer
    x = 15,882.16

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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.