Home / 10,781.36-16,171.98-3,386.36

Finding the Fourth Proportional to 10,781.36, 16,171.98 and 3,386.36

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Solution

The fourth proportional to 10,781.36, 16,171.98 and 3,386.36 is: 5,079.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.36 : 16,171.98 = 3,386.36 : x
  2. Step 2: Convert to fraction form
    10,781.36/16,171.98 = 3,386.36/x
  3. Step 3: Cross multiply
    10,781.36x = 16,171.98 × 3,386.36
  4. Step 4: Simplify right side
    10,781.36x = 54,764,146.19
  5. Step 5: Solve for x
    x = 54,764,146.19/10,781.36
  6. Step 6: Final answer
    x = 5,079.52

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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.