Home / 13,744.31-20,603.63-5,424.39

Finding the Fourth Proportional to 13,744.31, 20,603.63 and 5,424.39

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Solution

The fourth proportional to 13,744.31, 20,603.63 and 5,424.39 is: 8,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,744.31 : 20,603.63 = 5,424.39 : x
  2. Step 2: Convert to fraction form
    13,744.31/20,603.63 = 5,424.39/x
  3. Step 3: Cross multiply
    13,744.31x = 20,603.63 × 5,424.39
  4. Step 4: Simplify right side
    13,744.31x = 111,762,138.10
  5. Step 5: Solve for x
    x = 111,762,138.10/13,744.31
  6. Step 6: Final answer
    x = 8,131.52

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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.