Home / 12,269.24-18,398.40-3,947.72

Finding the Fourth Proportional to 12,269.24, 18,398.40 and 3,947.72

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Solution

The fourth proportional to 12,269.24, 18,398.40 and 3,947.72 is: 5,919.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,269.24 : 18,398.40 = 3,947.72 : x
  2. Step 2: Convert to fraction form
    12,269.24/18,398.40 = 3,947.72/x
  3. Step 3: Cross multiply
    12,269.24x = 18,398.40 × 3,947.72
  4. Step 4: Simplify right side
    12,269.24x = 72,631,731.65
  5. Step 5: Solve for x
    x = 72,631,731.65/12,269.24
  6. Step 6: Final answer
    x = 5,919.82

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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.