Home / 18,419.82-25,422.68-10,865.72

Finding the Fourth Proportional to 18,419.82, 25,422.68 and 10,865.72

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Solution

The fourth proportional to 18,419.82, 25,422.68 and 10,865.72 is: 14,996.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.82 : 25,422.68 = 10,865.72 : x
  2. Step 2: Convert to fraction form
    18,419.82/25,422.68 = 10,865.72/x
  3. Step 3: Cross multiply
    18,419.82x = 25,422.68 × 10,865.72
  4. Step 4: Simplify right side
    18,419.82x = 276,235,722.53
  5. Step 5: Solve for x
    x = 276,235,722.53/18,419.82
  6. Step 6: Final answer
    x = 14,996.66

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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.