Home / 13,185.24-18,200.88-8,649.65

Finding the Fourth Proportional to 13,185.24, 18,200.88 and 8,649.65

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Solution

The fourth proportional to 13,185.24, 18,200.88 and 8,649.65 is: 11,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.24 : 18,200.88 = 8,649.65 : x
  2. Step 2: Convert to fraction form
    13,185.24/18,200.88 = 8,649.65/x
  3. Step 3: Cross multiply
    13,185.24x = 18,200.88 × 8,649.65
  4. Step 4: Simplify right side
    13,185.24x = 157,431,150.69
  5. Step 5: Solve for x
    x = 157,431,150.69/13,185.24
  6. Step 6: Final answer
    x = 11,939.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.