Home / 21,822.53-32,708.40-12,469.10

Finding the Fourth Proportional to 21,822.53, 32,708.40 and 12,469.10

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Solution

The fourth proportional to 21,822.53, 32,708.40 and 12,469.10 is: 18,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,822.53 : 32,708.40 = 12,469.10 : x
  2. Step 2: Convert to fraction form
    21,822.53/32,708.40 = 12,469.10/x
  3. Step 3: Cross multiply
    21,822.53x = 32,708.40 × 12,469.10
  4. Step 4: Simplify right side
    21,822.53x = 407,844,310.44
  5. Step 5: Solve for x
    x = 407,844,310.44/21,822.53
  6. Step 6: Final answer
    x = 18,689.14

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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.