Home / 21,067.80-31,606.27-6,277.91

Finding the Fourth Proportional to 21,067.80, 31,606.27 and 6,277.91

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Solution

The fourth proportional to 21,067.80, 31,606.27 and 6,277.91 is: 9,418.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.80 : 31,606.27 = 6,277.91 : x
  2. Step 2: Convert to fraction form
    21,067.80/31,606.27 = 6,277.91/x
  3. Step 3: Cross multiply
    21,067.80x = 31,606.27 × 6,277.91
  4. Step 4: Simplify right side
    21,067.80x = 198,421,287.11
  5. Step 5: Solve for x
    x = 198,421,287.11/21,067.80
  6. Step 6: Final answer
    x = 9,418.23

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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.