Home / 20,069.75-27,694.01-11,115

Finding the Fourth Proportional to 20,069.75, 27,694.01 and 11,115

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Solution

The fourth proportional to 20,069.75, 27,694.01 and 11,115 is: 15,337.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.75 : 27,694.01 = 11,115 : x
  2. Step 2: Convert to fraction form
    20,069.75/27,694.01 = 11,115/x
  3. Step 3: Cross multiply
    20,069.75x = 27,694.01 × 11,115
  4. Step 4: Simplify right side
    20,069.75x = 307,818,948.94
  5. Step 5: Solve for x
    x = 307,818,948.94/20,069.75
  6. Step 6: Final answer
    x = 15,337.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.