Home / 13,626.38-20,434.20-5,305.28

Finding the Fourth Proportional to 13,626.38, 20,434.20 and 5,305.28

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Solution

The fourth proportional to 13,626.38, 20,434.20 and 5,305.28 is: 7,955.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.38 : 20,434.20 = 5,305.28 : x
  2. Step 2: Convert to fraction form
    13,626.38/20,434.20 = 5,305.28/x
  3. Step 3: Cross multiply
    13,626.38x = 20,434.20 × 5,305.28
  4. Step 4: Simplify right side
    13,626.38x = 108,409,152.58
  5. Step 5: Solve for x
    x = 108,409,152.58/13,626.38
  6. Step 6: Final answer
    x = 7,955.83

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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.