Home / 28,531.20-39,372.96-15,956.04

Finding the Fourth Proportional to 28,531.20, 39,372.96 and 15,956.04

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Solution

The fourth proportional to 28,531.20, 39,372.96 and 15,956.04 is: 22,019.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.20 : 39,372.96 = 15,956.04 : x
  2. Step 2: Convert to fraction form
    28,531.20/39,372.96 = 15,956.04/x
  3. Step 3: Cross multiply
    28,531.20x = 39,372.96 × 15,956.04
  4. Step 4: Simplify right side
    28,531.20x = 628,236,524.68
  5. Step 5: Solve for x
    x = 628,236,524.68/28,531.20
  6. Step 6: Final answer
    x = 22,019.28

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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.