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Finding the Fourth Proportional to 17,679.79, 26,504.79 and 7,677.01

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Solution

The fourth proportional to 17,679.79, 26,504.79 and 7,677.01 is: 11,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,679.79 : 26,504.79 = 7,677.01 : x
  2. Step 2: Convert to fraction form
    17,679.79/26,504.79 = 7,677.01/x
  3. Step 3: Cross multiply
    17,679.79x = 26,504.79 × 7,677.01
  4. Step 4: Simplify right side
    17,679.79x = 203,477,537.88
  5. Step 5: Solve for x
    x = 203,477,537.88/17,679.79
  6. Step 6: Final answer
    x = 11,509.05

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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.