Home / 20,110.11-30,167.49-7,639.47

Finding the Fourth Proportional to 20,110.11, 30,167.49 and 7,639.47

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Solution

The fourth proportional to 20,110.11, 30,167.49 and 7,639.47 is: 11,460.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.11 : 30,167.49 = 7,639.47 : x
  2. Step 2: Convert to fraction form
    20,110.11/30,167.49 = 7,639.47/x
  3. Step 3: Cross multiply
    20,110.11x = 30,167.49 × 7,639.47
  4. Step 4: Simplify right side
    20,110.11x = 230,463,634.83
  5. Step 5: Solve for x
    x = 230,463,634.83/20,110.11
  6. Step 6: Final answer
    x = 11,460.09

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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.