Home / 21,819.44-32,729.12-7,965.20

Finding the Fourth Proportional to 21,819.44, 32,729.12 and 7,965.20

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Solution

The fourth proportional to 21,819.44, 32,729.12 and 7,965.20 is: 11,947.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.44 : 32,729.12 = 7,965.20 : x
  2. Step 2: Convert to fraction form
    21,819.44/32,729.12 = 7,965.20/x
  3. Step 3: Cross multiply
    21,819.44x = 32,729.12 × 7,965.20
  4. Step 4: Simplify right side
    21,819.44x = 260,693,986.62
  5. Step 5: Solve for x
    x = 260,693,986.62/21,819.44
  6. Step 6: Final answer
    x = 11,947.79

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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.