Home / 12,708.28-17,546.18-9,718.91

Finding the Fourth Proportional to 12,708.28, 17,546.18 and 9,718.91

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Solution

The fourth proportional to 12,708.28, 17,546.18 and 9,718.91 is: 13,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.28 : 17,546.18 = 9,718.91 : x
  2. Step 2: Convert to fraction form
    12,708.28/17,546.18 = 9,718.91/x
  3. Step 3: Cross multiply
    12,708.28x = 17,546.18 × 9,718.91
  4. Step 4: Simplify right side
    12,708.28x = 170,529,607.94
  5. Step 5: Solve for x
    x = 170,529,607.94/12,708.28
  6. Step 6: Final answer
    x = 13,418.78

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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.