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Finding the Fourth Proportional to 12,755.65, 17,601.46 and 7,089.49

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Solution

The fourth proportional to 12,755.65, 17,601.46 and 7,089.49 is: 9,782.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,755.65 : 17,601.46 = 7,089.49 : x
  2. Step 2: Convert to fraction form
    12,755.65/17,601.46 = 7,089.49/x
  3. Step 3: Cross multiply
    12,755.65x = 17,601.46 × 7,089.49
  4. Step 4: Simplify right side
    12,755.65x = 124,785,251.20
  5. Step 5: Solve for x
    x = 124,785,251.20/12,755.65
  6. Step 6: Final answer
    x = 9,782.75

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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.