Home / 13,740.20-20,611.46-4,381.56

Finding the Fourth Proportional to 13,740.20, 20,611.46 and 4,381.56

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Solution

The fourth proportional to 13,740.20, 20,611.46 and 4,381.56 is: 6,572.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.20 : 20,611.46 = 4,381.56 : x
  2. Step 2: Convert to fraction form
    13,740.20/20,611.46 = 4,381.56/x
  3. Step 3: Cross multiply
    13,740.20x = 20,611.46 × 4,381.56
  4. Step 4: Simplify right side
    13,740.20x = 90,310,348.68
  5. Step 5: Solve for x
    x = 90,310,348.68/13,740.20
  6. Step 6: Final answer
    x = 6,572.71

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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.