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Finding the Fourth Proportional to 13,001.08, 17,940.78 and 7,696.38

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Solution

The fourth proportional to 13,001.08, 17,940.78 and 7,696.38 is: 10,620.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.08 : 17,940.78 = 7,696.38 : x
  2. Step 2: Convert to fraction form
    13,001.08/17,940.78 = 7,696.38/x
  3. Step 3: Cross multiply
    13,001.08x = 17,940.78 × 7,696.38
  4. Step 4: Simplify right side
    13,001.08x = 138,079,060.38
  5. Step 5: Solve for x
    x = 138,079,060.38/13,001.08
  6. Step 6: Final answer
    x = 10,620.58

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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.