Home / 13,382.88-18,469.06-8,077.62

Finding the Fourth Proportional to 13,382.88, 18,469.06 and 8,077.62

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Solution

The fourth proportional to 13,382.88, 18,469.06 and 8,077.62 is: 11,147.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.88 : 18,469.06 = 8,077.62 : x
  2. Step 2: Convert to fraction form
    13,382.88/18,469.06 = 8,077.62/x
  3. Step 3: Cross multiply
    13,382.88x = 18,469.06 × 8,077.62
  4. Step 4: Simplify right side
    13,382.88x = 149,186,048.44
  5. Step 5: Solve for x
    x = 149,186,048.44/13,382.88
  6. Step 6: Final answer
    x = 11,147.53

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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.