Home / 12,781.24-19,170.52-3,422.22

Finding the Fourth Proportional to 12,781.24, 19,170.52 and 3,422.22

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Solution

The fourth proportional to 12,781.24, 19,170.52 and 3,422.22 is: 5,132.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781.24 : 19,170.52 = 3,422.22 : x
  2. Step 2: Convert to fraction form
    12,781.24/19,170.52 = 3,422.22/x
  3. Step 3: Cross multiply
    12,781.24x = 19,170.52 × 3,422.22
  4. Step 4: Simplify right side
    12,781.24x = 65,605,837.51
  5. Step 5: Solve for x
    x = 65,605,837.51/12,781.24
  6. Step 6: Final answer
    x = 5,132.98

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1.5x scale

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.