Home / 19,920.44-29,882.48-5,129.40

Finding the Fourth Proportional to 19,920.44, 29,882.48 and 5,129.40

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Solution

The fourth proportional to 19,920.44, 29,882.48 and 5,129.40 is: 7,694.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.44 : 29,882.48 = 5,129.40 : x
  2. Step 2: Convert to fraction form
    19,920.44/29,882.48 = 5,129.40/x
  3. Step 3: Cross multiply
    19,920.44x = 29,882.48 × 5,129.40
  4. Step 4: Simplify right side
    19,920.44x = 153,279,167.27
  5. Step 5: Solve for x
    x = 153,279,167.27/19,920.44
  6. Step 6: Final answer
    x = 7,694.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.