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Finding the Fourth Proportional to 12,491.80, 17,230.51 and 8,008.45

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Solution

The fourth proportional to 12,491.80, 17,230.51 and 8,008.45 is: 11,046.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.80 : 17,230.51 = 8,008.45 : x
  2. Step 2: Convert to fraction form
    12,491.80/17,230.51 = 8,008.45/x
  3. Step 3: Cross multiply
    12,491.80x = 17,230.51 × 8,008.45
  4. Step 4: Simplify right side
    12,491.80x = 137,989,677.81
  5. Step 5: Solve for x
    x = 137,989,677.81/12,491.80
  6. Step 6: Final answer
    x = 11,046.42

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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.