Home / 20,862.40-31,294.02-6,822.49

Finding the Fourth Proportional to 20,862.40, 31,294.02 and 6,822.49

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Solution

The fourth proportional to 20,862.40, 31,294.02 and 6,822.49 is: 10,233.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.40 : 31,294.02 = 6,822.49 : x
  2. Step 2: Convert to fraction form
    20,862.40/31,294.02 = 6,822.49/x
  3. Step 3: Cross multiply
    20,862.40x = 31,294.02 × 6,822.49
  4. Step 4: Simplify right side
    20,862.40x = 213,503,138.51
  5. Step 5: Solve for x
    x = 213,503,138.51/20,862.40
  6. Step 6: Final answer
    x = 10,233.87

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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.