Home / 21,920.20-32,862.30-9,449.80

Finding the Fourth Proportional to 21,920.20, 32,862.30 and 9,449.80

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Solution

The fourth proportional to 21,920.20, 32,862.30 and 9,449.80 is: 14,166.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.20 : 32,862.30 = 9,449.80 : x
  2. Step 2: Convert to fraction form
    21,920.20/32,862.30 = 9,449.80/x
  3. Step 3: Cross multiply
    21,920.20x = 32,862.30 × 9,449.80
  4. Step 4: Simplify right side
    21,920.20x = 310,542,162.54
  5. Step 5: Solve for x
    x = 310,542,162.54/21,920.20
  6. Step 6: Final answer
    x = 14,166.94

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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.