Home / 21,974.20-32,912.70-8,819.80

Finding the Fourth Proportional to 21,974.20, 32,912.70 and 8,819.80

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Solution

The fourth proportional to 21,974.20, 32,912.70 and 8,819.80 is: 13,210.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,974.20 : 32,912.70 = 8,819.80 : x
  2. Step 2: Convert to fraction form
    21,974.20/32,912.70 = 8,819.80/x
  3. Step 3: Cross multiply
    21,974.20x = 32,912.70 × 8,819.80
  4. Step 4: Simplify right side
    21,974.20x = 290,283,431.46
  5. Step 5: Solve for x
    x = 290,283,431.46/21,974.20
  6. Step 6: Final answer
    x = 13,210.19

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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.