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Finding the Fourth Proportional to 12,491.67, 17,230.34 and 8,008.32

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Solution

The fourth proportional to 12,491.67, 17,230.34 and 8,008.32 is: 11,046.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.67 : 17,230.34 = 8,008.32 : x
  2. Step 2: Convert to fraction form
    12,491.67/17,230.34 = 8,008.32/x
  3. Step 3: Cross multiply
    12,491.67x = 17,230.34 × 8,008.32
  4. Step 4: Simplify right side
    12,491.67x = 137,986,036.39
  5. Step 5: Solve for x
    x = 137,986,036.39/12,491.67
  6. Step 6: Final answer
    x = 11,046.24

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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.