Home / 12,581.28-18,857.16-6,742.08

Finding the Fourth Proportional to 12,581.28, 18,857.16 and 6,742.08

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Solution

The fourth proportional to 12,581.28, 18,857.16 and 6,742.08 is: 10,105.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.28 : 18,857.16 = 6,742.08 : x
  2. Step 2: Convert to fraction form
    12,581.28/18,857.16 = 6,742.08/x
  3. Step 3: Cross multiply
    12,581.28x = 18,857.16 × 6,742.08
  4. Step 4: Simplify right side
    12,581.28x = 127,136,481.29
  5. Step 5: Solve for x
    x = 127,136,481.29/12,581.28
  6. Step 6: Final answer
    x = 10,105.21

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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.