Home / 21,512.68-32,269.98-6,721.90

Finding the Fourth Proportional to 21,512.68, 32,269.98 and 6,721.90

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Solution

The fourth proportional to 21,512.68, 32,269.98 and 6,721.90 is: 10,083.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.68 : 32,269.98 = 6,721.90 : x
  2. Step 2: Convert to fraction form
    21,512.68/32,269.98 = 6,721.90/x
  3. Step 3: Cross multiply
    21,512.68x = 32,269.98 × 6,721.90
  4. Step 4: Simplify right side
    21,512.68x = 216,915,578.56
  5. Step 5: Solve for x
    x = 216,915,578.56/21,512.68
  6. Step 6: Final answer
    x = 10,083.15

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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.