Home / 15,198.29-20,964.87-9,144.33

Finding the Fourth Proportional to 15,198.29, 20,964.87 and 9,144.33

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Solution

The fourth proportional to 15,198.29, 20,964.87 and 9,144.33 is: 12,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,198.29 : 20,964.87 = 9,144.33 : x
  2. Step 2: Convert to fraction form
    15,198.29/20,964.87 = 9,144.33/x
  3. Step 3: Cross multiply
    15,198.29x = 20,964.87 × 9,144.33
  4. Step 4: Simplify right side
    15,198.29x = 191,709,689.69
  5. Step 5: Solve for x
    x = 191,709,689.69/15,198.29
  6. Step 6: Final answer
    x = 12,613.90

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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.