Home / 12,549.40-17,318.71-7,512.65

Finding the Fourth Proportional to 12,549.40, 17,318.71 and 7,512.65

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Solution

The fourth proportional to 12,549.40, 17,318.71 and 7,512.65 is: 10,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,549.40 : 17,318.71 = 7,512.65 : x
  2. Step 2: Convert to fraction form
    12,549.40/17,318.71 = 7,512.65/x
  3. Step 3: Cross multiply
    12,549.40x = 17,318.71 × 7,512.65
  4. Step 4: Simplify right side
    12,549.40x = 130,109,406.68
  5. Step 5: Solve for x
    x = 130,109,406.68/12,549.40
  6. Step 6: Final answer
    x = 10,367.78

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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.