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Finding the Fourth Proportional to 17,777.94, 26,668.10 and 5,128.03

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Solution

The fourth proportional to 17,777.94, 26,668.10 and 5,128.03 is: 7,692.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,777.94 : 26,668.10 = 5,128.03 : x
  2. Step 2: Convert to fraction form
    17,777.94/26,668.10 = 5,128.03/x
  3. Step 3: Cross multiply
    17,777.94x = 26,668.10 × 5,128.03
  4. Step 4: Simplify right side
    17,777.94x = 136,754,816.84
  5. Step 5: Solve for x
    x = 136,754,816.84/17,777.94
  6. Step 6: Final answer
    x = 7,692.39

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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.