Home / 21,480.55-32,229.04-12,131.12

Finding the Fourth Proportional to 21,480.55, 32,229.04 and 12,131.12

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Solution

The fourth proportional to 21,480.55, 32,229.04 and 12,131.12 is: 18,201.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.55 : 32,229.04 = 12,131.12 : x
  2. Step 2: Convert to fraction form
    21,480.55/32,229.04 = 12,131.12/x
  3. Step 3: Cross multiply
    21,480.55x = 32,229.04 × 12,131.12
  4. Step 4: Simplify right side
    21,480.55x = 390,974,351.72
  5. Step 5: Solve for x
    x = 390,974,351.72/21,480.55
  6. Step 6: Final answer
    x = 18,201.32

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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.