Home / 18,517.80-27,770.12-6,668.39

Finding the Fourth Proportional to 18,517.80, 27,770.12 and 6,668.39

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Solution

The fourth proportional to 18,517.80, 27,770.12 and 6,668.39 is: 10,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.80 : 27,770.12 = 6,668.39 : x
  2. Step 2: Convert to fraction form
    18,517.80/27,770.12 = 6,668.39/x
  3. Step 3: Cross multiply
    18,517.80x = 27,770.12 × 6,668.39
  4. Step 4: Simplify right side
    18,517.80x = 185,181,990.51
  5. Step 5: Solve for x
    x = 185,181,990.51/18,517.80
  6. Step 6: Final answer
    x = 10,000.22

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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.