Home / 13,938.24-20,892.78-5,169.18

Finding the Fourth Proportional to 13,938.24, 20,892.78 and 5,169.18

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Solution

The fourth proportional to 13,938.24, 20,892.78 and 5,169.18 is: 7,748.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.24 : 20,892.78 = 5,169.18 : x
  2. Step 2: Convert to fraction form
    13,938.24/20,892.78 = 5,169.18/x
  3. Step 3: Cross multiply
    13,938.24x = 20,892.78 × 5,169.18
  4. Step 4: Simplify right side
    13,938.24x = 107,998,540.52
  5. Step 5: Solve for x
    x = 107,998,540.52/13,938.24
  6. Step 6: Final answer
    x = 7,748.36

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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.