Home / 21,871.97-32,787.91-10,620.77

Finding the Fourth Proportional to 21,871.97, 32,787.91 and 10,620.77

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Solution

The fourth proportional to 21,871.97, 32,787.91 and 10,620.77 is: 15,921.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.97 : 32,787.91 = 10,620.77 : x
  2. Step 2: Convert to fraction form
    21,871.97/32,787.91 = 10,620.77/x
  3. Step 3: Cross multiply
    21,871.97x = 32,787.91 × 10,620.77
  4. Step 4: Simplify right side
    21,871.97x = 348,232,914.53
  5. Step 5: Solve for x
    x = 348,232,914.53/21,871.97
  6. Step 6: Final answer
    x = 15,921.42

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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.