Home / 18,419.11-25,427.45-12,758.17

Finding the Fourth Proportional to 18,419.11, 25,427.45 and 12,758.17

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Solution

The fourth proportional to 18,419.11, 25,427.45 and 12,758.17 is: 17,612.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.11 : 25,427.45 = 12,758.17 : x
  2. Step 2: Convert to fraction form
    18,419.11/25,427.45 = 12,758.17/x
  3. Step 3: Cross multiply
    18,419.11x = 25,427.45 × 12,758.17
  4. Step 4: Simplify right side
    18,419.11x = 324,407,634.52
  5. Step 5: Solve for x
    x = 324,407,634.52/18,419.11
  6. Step 6: Final answer
    x = 17,612.56

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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.