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Finding the Fourth Proportional to 12,757.65, 17,604.21 and 7,091.49

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Solution

The fourth proportional to 12,757.65, 17,604.21 and 7,091.49 is: 9,785.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,757.65 : 17,604.21 = 7,091.49 : x
  2. Step 2: Convert to fraction form
    12,757.65/17,604.21 = 7,091.49/x
  3. Step 3: Cross multiply
    12,757.65x = 17,604.21 × 7,091.49
  4. Step 4: Simplify right side
    12,757.65x = 124,840,079.17
  5. Step 5: Solve for x
    x = 124,840,079.17/12,757.65
  6. Step 6: Final answer
    x = 9,785.51

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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.