Home / 13,381.29-20,069.78-4,149.45

Finding the Fourth Proportional to 13,381.29, 20,069.78 and 4,149.45

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Solution

The fourth proportional to 13,381.29, 20,069.78 and 4,149.45 is: 6,223.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.29 : 20,069.78 = 4,149.45 : x
  2. Step 2: Convert to fraction form
    13,381.29/20,069.78 = 4,149.45/x
  3. Step 3: Cross multiply
    13,381.29x = 20,069.78 × 4,149.45
  4. Step 4: Simplify right side
    13,381.29x = 83,278,527.87
  5. Step 5: Solve for x
    x = 83,278,527.87/13,381.29
  6. Step 6: Final answer
    x = 6,223.51

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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.