Home / 21,804.30-32,706.45-18,531.90

Finding the Fourth Proportional to 21,804.30, 32,706.45 and 18,531.90

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Solution

The fourth proportional to 21,804.30, 32,706.45 and 18,531.90 is: 27,797.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.30 : 32,706.45 = 18,531.90 : x
  2. Step 2: Convert to fraction form
    21,804.30/32,706.45 = 18,531.90/x
  3. Step 3: Cross multiply
    21,804.30x = 32,706.45 × 18,531.90
  4. Step 4: Simplify right side
    21,804.30x = 606,112,660.76
  5. Step 5: Solve for x
    x = 606,112,660.76/21,804.30
  6. Step 6: Final answer
    x = 27,797.85

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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.