Home / 18,660.35-25,749.38-11,489.13

Finding the Fourth Proportional to 18,660.35, 25,749.38 and 11,489.13

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Solution

The fourth proportional to 18,660.35, 25,749.38 and 11,489.13 is: 15,853.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.35 : 25,749.38 = 11,489.13 : x
  2. Step 2: Convert to fraction form
    18,660.35/25,749.38 = 11,489.13/x
  3. Step 3: Cross multiply
    18,660.35x = 25,749.38 × 11,489.13
  4. Step 4: Simplify right side
    18,660.35x = 295,838,002.96
  5. Step 5: Solve for x
    x = 295,838,002.96/18,660.35
  6. Step 6: Final answer
    x = 15,853.83

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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.