Home / 12,456.96-17,190.48-7,153.44

Finding the Fourth Proportional to 12,456.96, 17,190.48 and 7,153.44

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Solution

The fourth proportional to 12,456.96, 17,190.48 and 7,153.44 is: 9,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.96 : 17,190.48 = 7,153.44 : x
  2. Step 2: Convert to fraction form
    12,456.96/17,190.48 = 7,153.44/x
  3. Step 3: Cross multiply
    12,456.96x = 17,190.48 × 7,153.44
  4. Step 4: Simplify right side
    12,456.96x = 122,971,067.25
  5. Step 5: Solve for x
    x = 122,971,067.25/12,456.96
  6. Step 6: Final answer
    x = 9,871.68

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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.