Home / 10,936.80-16,386.30-5,081.40

Finding the Fourth Proportional to 10,936.80, 16,386.30 and 5,081.40

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Solution

The fourth proportional to 10,936.80, 16,386.30 and 5,081.40 is: 7,613.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,936.80 : 16,386.30 = 5,081.40 : x
  2. Step 2: Convert to fraction form
    10,936.80/16,386.30 = 5,081.40/x
  3. Step 3: Cross multiply
    10,936.80x = 16,386.30 × 5,081.40
  4. Step 4: Simplify right side
    10,936.80x = 83,265,344.82
  5. Step 5: Solve for x
    x = 83,265,344.82/10,936.80
  6. Step 6: Final answer
    x = 7,613.32

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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.