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Finding the Fourth Proportional to 13,859.50, 20,791.99 and 7,088.01

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Solution

The fourth proportional to 13,859.50, 20,791.99 and 7,088.01 is: 10,633.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.50 : 20,791.99 = 7,088.01 : x
  2. Step 2: Convert to fraction form
    13,859.50/20,791.99 = 7,088.01/x
  3. Step 3: Cross multiply
    13,859.50x = 20,791.99 × 7,088.01
  4. Step 4: Simplify right side
    13,859.50x = 147,373,833.04
  5. Step 5: Solve for x
    x = 147,373,833.04/13,859.50
  6. Step 6: Final answer
    x = 10,633.42

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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.