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Finding the Fourth Proportional to 17,704.40, 26,563.80 and 7,317.20

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Solution

The fourth proportional to 17,704.40, 26,563.80 and 7,317.20 is: 10,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,704.40 : 26,563.80 = 7,317.20 : x
  2. Step 2: Convert to fraction form
    17,704.40/26,563.80 = 7,317.20/x
  3. Step 3: Cross multiply
    17,704.40x = 26,563.80 × 7,317.20
  4. Step 4: Simplify right side
    17,704.40x = 194,372,637.36
  5. Step 5: Solve for x
    x = 194,372,637.36/17,704.40
  6. Step 6: Final answer
    x = 10,978.78

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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.