Home / 12,408.90-17,124.34-6,743.68

Finding the Fourth Proportional to 12,408.90, 17,124.34 and 6,743.68

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Solution

The fourth proportional to 12,408.90, 17,124.34 and 6,743.68 is: 9,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.90 : 17,124.34 = 6,743.68 : x
  2. Step 2: Convert to fraction form
    12,408.90/17,124.34 = 6,743.68/x
  3. Step 3: Cross multiply
    12,408.90x = 17,124.34 × 6,743.68
  4. Step 4: Simplify right side
    12,408.90x = 115,481,069.17
  5. Step 5: Solve for x
    x = 115,481,069.17/12,408.90
  6. Step 6: Final answer
    x = 9,306.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.