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Finding the Fourth Proportional to 12,008.30, 18,012.22 and 7,045.18

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Solution

The fourth proportional to 12,008.30, 18,012.22 and 7,045.18 is: 10,567.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.30 : 18,012.22 = 7,045.18 : x
  2. Step 2: Convert to fraction form
    12,008.30/18,012.22 = 7,045.18/x
  3. Step 3: Cross multiply
    12,008.30x = 18,012.22 × 7,045.18
  4. Step 4: Simplify right side
    12,008.30x = 126,899,309.09
  5. Step 5: Solve for x
    x = 126,899,309.09/12,008.30
  6. Step 6: Final answer
    x = 10,567.63

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.