Home / 10,742.80-16,116.92-5,198.80

Finding the Fourth Proportional to 10,742.80, 16,116.92 and 5,198.80

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Solution

The fourth proportional to 10,742.80, 16,116.92 and 5,198.80 is: 7,799.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.80 : 16,116.92 = 5,198.80 : x
  2. Step 2: Convert to fraction form
    10,742.80/16,116.92 = 5,198.80/x
  3. Step 3: Cross multiply
    10,742.80x = 16,116.92 × 5,198.80
  4. Step 4: Simplify right side
    10,742.80x = 83,788,643.70
  5. Step 5: Solve for x
    x = 83,788,643.70/10,742.80
  6. Step 6: Final answer
    x = 7,799.52

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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.