Home / 21,815.31-32,737.29-11,961.57

Finding the Fourth Proportional to 21,815.31, 32,737.29 and 11,961.57

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Solution

The fourth proportional to 21,815.31, 32,737.29 and 11,961.57 is: 17,950.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.31 : 32,737.29 = 11,961.57 : x
  2. Step 2: Convert to fraction form
    21,815.31/32,737.29 = 11,961.57/x
  3. Step 3: Cross multiply
    21,815.31x = 32,737.29 × 11,961.57
  4. Step 4: Simplify right side
    21,815.31x = 391,589,385.95
  5. Step 5: Solve for x
    x = 391,589,385.95/21,815.31
  6. Step 6: Final answer
    x = 17,950.21

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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.