Home / 13,117.67-18,102.39-7,149.33

Finding the Fourth Proportional to 13,117.67, 18,102.39 and 7,149.33

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Solution

The fourth proportional to 13,117.67, 18,102.39 and 7,149.33 is: 9,866.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.67 : 18,102.39 = 7,149.33 : x
  2. Step 2: Convert to fraction form
    13,117.67/18,102.39 = 7,149.33/x
  3. Step 3: Cross multiply
    13,117.67x = 18,102.39 × 7,149.33
  4. Step 4: Simplify right side
    13,117.67x = 129,419,959.90
  5. Step 5: Solve for x
    x = 129,419,959.90/13,117.67
  6. Step 6: Final answer
    x = 9,866.08

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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.