Home / 20,822.88-31,292.64-10,441.92

Finding the Fourth Proportional to 20,822.88, 31,292.64 and 10,441.92

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Solution

The fourth proportional to 20,822.88, 31,292.64 and 10,441.92 is: 15,692.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.88 : 31,292.64 = 10,441.92 : x
  2. Step 2: Convert to fraction form
    20,822.88/31,292.64 = 10,441.92/x
  3. Step 3: Cross multiply
    20,822.88x = 31,292.64 × 10,441.92
  4. Step 4: Simplify right side
    20,822.88x = 326,755,243.47
  5. Step 5: Solve for x
    x = 326,755,243.47/20,822.88
  6. Step 6: Final answer
    x = 15,692.13

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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.