Home / 13,541.40-20,309.76-3,679.38

Finding the Fourth Proportional to 13,541.40, 20,309.76 and 3,679.38

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Solution

The fourth proportional to 13,541.40, 20,309.76 and 3,679.38 is: 5,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,541.40 : 20,309.76 = 3,679.38 : x
  2. Step 2: Convert to fraction form
    13,541.40/20,309.76 = 3,679.38/x
  3. Step 3: Cross multiply
    13,541.40x = 20,309.76 × 3,679.38
  4. Step 4: Simplify right side
    13,541.40x = 74,727,324.75
  5. Step 5: Solve for x
    x = 74,727,324.75/13,541.40
  6. Step 6: Final answer
    x = 5,518.43

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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.