Home / 13,494.72-20,241.28-5,174.40

Finding the Fourth Proportional to 13,494.72, 20,241.28 and 5,174.40

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Solution

The fourth proportional to 13,494.72, 20,241.28 and 5,174.40 is: 7,761.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,494.72 : 20,241.28 = 5,174.40 : x
  2. Step 2: Convert to fraction form
    13,494.72/20,241.28 = 5,174.40/x
  3. Step 3: Cross multiply
    13,494.72x = 20,241.28 × 5,174.40
  4. Step 4: Simplify right side
    13,494.72x = 104,736,479.23
  5. Step 5: Solve for x
    x = 104,736,479.23/13,494.72
  6. Step 6: Final answer
    x = 7,761.29

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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.