Home / 18,357.12-25,318.35-12,694.14

Finding the Fourth Proportional to 18,357.12, 25,318.35 and 12,694.14

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Solution

The fourth proportional to 18,357.12, 25,318.35 and 12,694.14 is: 17,507.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.12 : 25,318.35 = 12,694.14 : x
  2. Step 2: Convert to fraction form
    18,357.12/25,318.35 = 12,694.14/x
  3. Step 3: Cross multiply
    18,357.12x = 25,318.35 × 12,694.14
  4. Step 4: Simplify right side
    18,357.12x = 321,394,679.47
  5. Step 5: Solve for x
    x = 321,394,679.47/18,357.12
  6. Step 6: Final answer
    x = 17,507.90

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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.