Home / 10,781.21-16,171.82-3,386.24

Finding the Fourth Proportional to 10,781.21, 16,171.82 and 3,386.24

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Solution

The fourth proportional to 10,781.21, 16,171.82 and 3,386.24 is: 5,079.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.21 : 16,171.82 = 3,386.24 : x
  2. Step 2: Convert to fraction form
    10,781.21/16,171.82 = 3,386.24/x
  3. Step 3: Cross multiply
    10,781.21x = 16,171.82 × 3,386.24
  4. Step 4: Simplify right side
    10,781.21x = 54,761,663.76
  5. Step 5: Solve for x
    x = 54,761,663.76/10,781.21
  6. Step 6: Final answer
    x = 5,079.36

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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.