Home / 21,872.97-32,789.41-10,621.77

Finding the Fourth Proportional to 21,872.97, 32,789.41 and 10,621.77

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Solution

The fourth proportional to 21,872.97, 32,789.41 and 10,621.77 is: 15,922.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,872.97 : 32,789.41 = 10,621.77 : x
  2. Step 2: Convert to fraction form
    21,872.97/32,789.41 = 10,621.77/x
  3. Step 3: Cross multiply
    21,872.97x = 32,789.41 × 10,621.77
  4. Step 4: Simplify right side
    21,872.97x = 348,281,571.46
  5. Step 5: Solve for x
    x = 348,281,571.46/21,872.97
  6. Step 6: Final answer
    x = 15,922.92

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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.