Home / 18,871.20-28,307.21-6,862.95

Finding the Fourth Proportional to 18,871.20, 28,307.21 and 6,862.95

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Solution

The fourth proportional to 18,871.20, 28,307.21 and 6,862.95 is: 10,294.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.20 : 28,307.21 = 6,862.95 : x
  2. Step 2: Convert to fraction form
    18,871.20/28,307.21 = 6,862.95/x
  3. Step 3: Cross multiply
    18,871.20x = 28,307.21 × 6,862.95
  4. Step 4: Simplify right side
    18,871.20x = 194,270,932.55
  5. Step 5: Solve for x
    x = 194,270,932.55/18,871.20
  6. Step 6: Final answer
    x = 10,294.57

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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.