Home / 12,205.85-18,287.87-6,663.08

Finding the Fourth Proportional to 12,205.85, 18,287.87 and 6,663.08

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Solution

The fourth proportional to 12,205.85, 18,287.87 and 6,663.08 is: 9,983.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.85 : 18,287.87 = 6,663.08 : x
  2. Step 2: Convert to fraction form
    12,205.85/18,287.87 = 6,663.08/x
  3. Step 3: Cross multiply
    12,205.85x = 18,287.87 × 6,663.08
  4. Step 4: Simplify right side
    12,205.85x = 121,853,540.84
  5. Step 5: Solve for x
    x = 121,853,540.84/12,205.85
  6. Step 6: Final answer
    x = 9,983.21

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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.