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Finding the Fourth Proportional to 17,520, 26,279.04 and 7,140.48

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Solution

The fourth proportional to 17,520, 26,279.04 and 7,140.48 is: 10,710.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,520 : 26,279.04 = 7,140.48 : x
  2. Step 2: Convert to fraction form
    17,520/26,279.04 = 7,140.48/x
  3. Step 3: Cross multiply
    17,520x = 26,279.04 × 7,140.48
  4. Step 4: Simplify right side
    17,520x = 187,644,959.54
  5. Step 5: Solve for x
    x = 187,644,959.54/17,520
  6. Step 6: Final answer
    x = 10,710.33

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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.