Home / 12,847.25-17,729.32-7,542.15

Finding the Fourth Proportional to 12,847.25, 17,729.32 and 7,542.15

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Solution

The fourth proportional to 12,847.25, 17,729.32 and 7,542.15 is: 10,408.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,847.25 : 17,729.32 = 7,542.15 : x
  2. Step 2: Convert to fraction form
    12,847.25/17,729.32 = 7,542.15/x
  3. Step 3: Cross multiply
    12,847.25x = 17,729.32 × 7,542.15
  4. Step 4: Simplify right side
    12,847.25x = 133,717,190.84
  5. Step 5: Solve for x
    x = 133,717,190.84/12,847.25
  6. Step 6: Final answer
    x = 10,408.24

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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.