Home / 13,651.38-20,474.10-5,328.72

Finding the Fourth Proportional to 13,651.38, 20,474.10 and 5,328.72

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Solution

The fourth proportional to 13,651.38, 20,474.10 and 5,328.72 is: 7,991.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.38 : 20,474.10 = 5,328.72 : x
  2. Step 2: Convert to fraction form
    13,651.38/20,474.10 = 5,328.72/x
  3. Step 3: Cross multiply
    13,651.38x = 20,474.10 × 5,328.72
  4. Step 4: Simplify right side
    13,651.38x = 109,100,746.15
  5. Step 5: Solve for x
    x = 109,100,746.15/13,651.38
  6. Step 6: Final answer
    x = 7,991.92

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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.