Home / 12,195.28-18,204.68-10,719.12

Finding the Fourth Proportional to 12,195.28, 18,204.68 and 10,719.12

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Solution

The fourth proportional to 12,195.28, 18,204.68 and 10,719.12 is: 16,001.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.28 : 18,204.68 = 10,719.12 : x
  2. Step 2: Convert to fraction form
    12,195.28/18,204.68 = 10,719.12/x
  3. Step 3: Cross multiply
    12,195.28x = 18,204.68 × 10,719.12
  4. Step 4: Simplify right side
    12,195.28x = 195,138,149.48
  5. Step 5: Solve for x
    x = 195,138,149.48/12,195.28
  6. Step 6: Final answer
    x = 16,001.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.