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Finding the Fourth Proportional to 17,561.78, 26,342.67 and 7,173.53

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Solution

The fourth proportional to 17,561.78, 26,342.67 and 7,173.53 is: 10,760.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,561.78 : 26,342.67 = 7,173.53 : x
  2. Step 2: Convert to fraction form
    17,561.78/26,342.67 = 7,173.53/x
  3. Step 3: Cross multiply
    17,561.78x = 26,342.67 × 7,173.53
  4. Step 4: Simplify right side
    17,561.78x = 188,969,801.81
  5. Step 5: Solve for x
    x = 188,969,801.81/17,561.78
  6. Step 6: Final answer
    x = 10,760.29

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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.