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Finding the Fourth Proportional to 12,149.55, 18,195.97 and 9,354.03

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Solution

The fourth proportional to 12,149.55, 18,195.97 and 9,354.03 is: 14,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.55 : 18,195.97 = 9,354.03 : x
  2. Step 2: Convert to fraction form
    12,149.55/18,195.97 = 9,354.03/x
  3. Step 3: Cross multiply
    12,149.55x = 18,195.97 × 9,354.03
  4. Step 4: Simplify right side
    12,149.55x = 170,205,649.26
  5. Step 5: Solve for x
    x = 170,205,649.26/12,149.55
  6. Step 6: Final answer
    x = 14,009.21

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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.