Home / 12,391.93-18,588.96-3,959.65

Finding the Fourth Proportional to 12,391.93, 18,588.96 and 3,959.65

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Solution

The fourth proportional to 12,391.93, 18,588.96 and 3,959.65 is: 5,939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.93 : 18,588.96 = 3,959.65 : x
  2. Step 2: Convert to fraction form
    12,391.93/18,588.96 = 3,959.65/x
  3. Step 3: Cross multiply
    12,391.93x = 18,588.96 × 3,959.65
  4. Step 4: Simplify right side
    12,391.93x = 73,605,798.70
  5. Step 5: Solve for x
    x = 73,605,798.70/12,391.93
  6. Step 6: Final answer
    x = 5,939.82

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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.