Home / 13,517.28-20,275.11-4,283.28

Finding the Fourth Proportional to 13,517.28, 20,275.11 and 4,283.28

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Solution

The fourth proportional to 13,517.28, 20,275.11 and 4,283.28 is: 6,424.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.28 : 20,275.11 = 4,283.28 : x
  2. Step 2: Convert to fraction form
    13,517.28/20,275.11 = 4,283.28/x
  3. Step 3: Cross multiply
    13,517.28x = 20,275.11 × 4,283.28
  4. Step 4: Simplify right side
    13,517.28x = 86,843,973.16
  5. Step 5: Solve for x
    x = 86,843,973.16/13,517.28
  6. Step 6: Final answer
    x = 6,424.66

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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.