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Finding the Fourth Proportional to 13,028.97, 17,980.32 and 7,995.98

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Solution

The fourth proportional to 13,028.97, 17,980.32 and 7,995.98 is: 11,034.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.97 : 17,980.32 = 7,995.98 : x
  2. Step 2: Convert to fraction form
    13,028.97/17,980.32 = 7,995.98/x
  3. Step 3: Cross multiply
    13,028.97x = 17,980.32 × 7,995.98
  4. Step 4: Simplify right side
    13,028.97x = 143,770,279.11
  5. Step 5: Solve for x
    x = 143,770,279.11/13,028.97
  6. Step 6: Final answer
    x = 11,034.66

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Similar ratio
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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.