Home / 18,613.12-25,687.68-10,231.36

Finding the Fourth Proportional to 18,613.12, 25,687.68 and 10,231.36

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Solution

The fourth proportional to 18,613.12, 25,687.68 and 10,231.36 is: 14,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.12 : 25,687.68 = 10,231.36 : x
  2. Step 2: Convert to fraction form
    18,613.12/25,687.68 = 10,231.36/x
  3. Step 3: Cross multiply
    18,613.12x = 25,687.68 × 10,231.36
  4. Step 4: Simplify right side
    18,613.12x = 262,819,901.64
  5. Step 5: Solve for x
    x = 262,819,901.64/18,613.12
  6. Step 6: Final answer
    x = 14,120.14

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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.