Home / 21,965.30-32,949.40-8,815.96

Finding the Fourth Proportional to 21,965.30, 32,949.40 and 8,815.96

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Solution

The fourth proportional to 21,965.30, 32,949.40 and 8,815.96 is: 13,224.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.30 : 32,949.40 = 8,815.96 : x
  2. Step 2: Convert to fraction form
    21,965.30/32,949.40 = 8,815.96/x
  3. Step 3: Cross multiply
    21,965.30x = 32,949.40 × 8,815.96
  4. Step 4: Simplify right side
    21,965.30x = 290,480,592.42
  5. Step 5: Solve for x
    x = 290,480,592.42/21,965.30
  6. Step 6: Final answer
    x = 13,224.52

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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.