Home / 12,440.67-17,169.11-7,137.20

Finding the Fourth Proportional to 12,440.67, 17,169.11 and 7,137.20

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Solution

The fourth proportional to 12,440.67, 17,169.11 and 7,137.20 is: 9,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.67 : 17,169.11 = 7,137.20 : x
  2. Step 2: Convert to fraction form
    12,440.67/17,169.11 = 7,137.20/x
  3. Step 3: Cross multiply
    12,440.67x = 17,169.11 × 7,137.20
  4. Step 4: Simplify right side
    12,440.67x = 122,539,250.36
  5. Step 5: Solve for x
    x = 122,539,250.36/12,440.67
  6. Step 6: Final answer
    x = 9,849.89

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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.