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Finding the Fourth Proportional to 15,279.80, 22,935.15 and 7,889.54

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Solution

The fourth proportional to 15,279.80, 22,935.15 and 7,889.54 is: 11,842.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279.80 : 22,935.15 = 7,889.54 : x
  2. Step 2: Convert to fraction form
    15,279.80/22,935.15 = 7,889.54/x
  3. Step 3: Cross multiply
    15,279.80x = 22,935.15 × 7,889.54
  4. Step 4: Simplify right side
    15,279.80x = 180,947,668.66
  5. Step 5: Solve for x
    x = 180,947,668.66/15,279.80
  6. Step 6: Final answer
    x = 11,842.28

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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.