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Finding the Fourth Proportional to 12,518.65, 17,274.57 and 7,481.87

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Solution

The fourth proportional to 12,518.65, 17,274.57 and 7,481.87 is: 10,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.65 : 17,274.57 = 7,481.87 : x
  2. Step 2: Convert to fraction form
    12,518.65/17,274.57 = 7,481.87/x
  3. Step 3: Cross multiply
    12,518.65x = 17,274.57 × 7,481.87
  4. Step 4: Simplify right side
    12,518.65x = 129,246,037.40
  5. Step 5: Solve for x
    x = 129,246,037.40/12,518.65
  6. Step 6: Final answer
    x = 10,324.28

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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.