Home / 13,687.20-20,530.76-3,298.95

Finding the Fourth Proportional to 13,687.20, 20,530.76 and 3,298.95

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Solution

The fourth proportional to 13,687.20, 20,530.76 and 3,298.95 is: 4,948.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.20 : 20,530.76 = 3,298.95 : x
  2. Step 2: Convert to fraction form
    13,687.20/20,530.76 = 3,298.95/x
  3. Step 3: Cross multiply
    13,687.20x = 20,530.76 × 3,298.95
  4. Step 4: Simplify right side
    13,687.20x = 67,729,946.58
  5. Step 5: Solve for x
    x = 67,729,946.58/13,687.20
  6. Step 6: Final answer
    x = 4,948.42

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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.