Home / 12,241.12-18,338.36-6,979.76

Finding the Fourth Proportional to 12,241.12, 18,338.36 and 6,979.76

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Solution

The fourth proportional to 12,241.12, 18,338.36 and 6,979.76 is: 10,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,241.12 : 18,338.36 = 6,979.76 : x
  2. Step 2: Convert to fraction form
    12,241.12/18,338.36 = 6,979.76/x
  3. Step 3: Cross multiply
    12,241.12x = 18,338.36 × 6,979.76
  4. Step 4: Simplify right side
    12,241.12x = 127,997,351.59
  5. Step 5: Solve for x
    x = 127,997,351.59/12,241.12
  6. Step 6: Final answer
    x = 10,456.34

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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.