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Finding the Fourth Proportional to 12,351.68, 17,045.22 and 6,686.31

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Solution

The fourth proportional to 12,351.68, 17,045.22 and 6,686.31 is: 9,227.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,351.68 : 17,045.22 = 6,686.31 : x
  2. Step 2: Convert to fraction form
    12,351.68/17,045.22 = 6,686.31/x
  3. Step 3: Cross multiply
    12,351.68x = 17,045.22 × 6,686.31
  4. Step 4: Simplify right side
    12,351.68x = 113,969,650.84
  5. Step 5: Solve for x
    x = 113,969,650.84/12,351.68
  6. Step 6: Final answer
    x = 9,227.06

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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.