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Finding the Fourth Proportional to 15,279.78, 22,882.65 and 7,763.57

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Solution

The fourth proportional to 15,279.78, 22,882.65 and 7,763.57 is: 11,626.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.78 : 22,882.65 = 7,763.57 : x
  2. Step 2: Convert to fraction form
    15,279.78/22,882.65 = 7,763.57/x
  3. Step 3: Cross multiply
    15,279.78x = 22,882.65 × 7,763.57
  4. Step 4: Simplify right side
    15,279.78x = 177,650,911.44
  5. Step 5: Solve for x
    x = 177,650,911.44/15,279.78
  6. Step 6: Final answer
    x = 11,626.53

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1.5x scale

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.