Home / 13,187.08-18,198.20-7,219.13

Finding the Fourth Proportional to 13,187.08, 18,198.20 and 7,219.13

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Solution

The fourth proportional to 13,187.08, 18,198.20 and 7,219.13 is: 9,962.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.08 : 18,198.20 = 7,219.13 : x
  2. Step 2: Convert to fraction form
    13,187.08/18,198.20 = 7,219.13/x
  3. Step 3: Cross multiply
    13,187.08x = 18,198.20 × 7,219.13
  4. Step 4: Simplify right side
    13,187.08x = 131,375,171.57
  5. Step 5: Solve for x
    x = 131,375,171.57/13,187.08
  6. Step 6: Final answer
    x = 9,962.42

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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.