Home / 21,531.24-32,290.58-8,380.49

Finding the Fourth Proportional to 21,531.24, 32,290.58 and 8,380.49

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Solution

The fourth proportional to 21,531.24, 32,290.58 and 8,380.49 is: 12,568.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.24 : 32,290.58 = 8,380.49 : x
  2. Step 2: Convert to fraction form
    21,531.24/32,290.58 = 8,380.49/x
  3. Step 3: Cross multiply
    21,531.24x = 32,290.58 × 8,380.49
  4. Step 4: Simplify right side
    21,531.24x = 270,610,742.28
  5. Step 5: Solve for x
    x = 270,610,742.28/21,531.24
  6. Step 6: Final answer
    x = 12,568.28

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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.