Home / 18,321.44-27,438.12-17,402.72

Finding the Fourth Proportional to 18,321.44, 27,438.12 and 17,402.72

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Solution

The fourth proportional to 18,321.44, 27,438.12 and 17,402.72 is: 26,062.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.44 : 27,438.12 = 17,402.72 : x
  2. Step 2: Convert to fraction form
    18,321.44/27,438.12 = 17,402.72/x
  3. Step 3: Cross multiply
    18,321.44x = 27,438.12 × 17,402.72
  4. Step 4: Simplify right side
    18,321.44x = 477,497,919.69
  5. Step 5: Solve for x
    x = 477,497,919.69/18,321.44
  6. Step 6: Final answer
    x = 26,062.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.