Home / 12,122.49-18,181.71-3,358.29

Finding the Fourth Proportional to 12,122.49, 18,181.71 and 3,358.29

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Solution

The fourth proportional to 12,122.49, 18,181.71 and 3,358.29 is: 5,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.49 : 18,181.71 = 3,358.29 : x
  2. Step 2: Convert to fraction form
    12,122.49/18,181.71 = 3,358.29/x
  3. Step 3: Cross multiply
    12,122.49x = 18,181.71 × 3,358.29
  4. Step 4: Simplify right side
    12,122.49x = 61,059,454.88
  5. Step 5: Solve for x
    x = 61,059,454.88/12,122.49
  6. Step 6: Final answer
    x = 5,036.87

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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.