Home / 12,229.38-18,377.28-6,390.36

Finding the Fourth Proportional to 12,229.38, 18,377.28 and 6,390.36

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Solution

The fourth proportional to 12,229.38, 18,377.28 and 6,390.36 is: 9,602.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.38 : 18,377.28 = 6,390.36 : x
  2. Step 2: Convert to fraction form
    12,229.38/18,377.28 = 6,390.36/x
  3. Step 3: Cross multiply
    12,229.38x = 18,377.28 × 6,390.36
  4. Step 4: Simplify right side
    12,229.38x = 117,437,435.02
  5. Step 5: Solve for x
    x = 117,437,435.02/12,229.38
  6. Step 6: Final answer
    x = 9,602.89

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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.