Home / 21,110.11-31,665.56-7,067.52

Finding the Fourth Proportional to 21,110.11, 31,665.56 and 7,067.52

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Solution

The fourth proportional to 21,110.11, 31,665.56 and 7,067.52 is: 10,601.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.11 : 31,665.56 = 7,067.52 : x
  2. Step 2: Convert to fraction form
    21,110.11/31,665.56 = 7,067.52/x
  3. Step 3: Cross multiply
    21,110.11x = 31,665.56 × 7,067.52
  4. Step 4: Simplify right side
    21,110.11x = 223,796,978.61
  5. Step 5: Solve for x
    x = 223,796,978.61/21,110.11
  6. Step 6: Final answer
    x = 10,601.41

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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.