Home / 21,167.22-31,739.50-7,122.58

Finding the Fourth Proportional to 21,167.22, 31,739.50 and 7,122.58

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Solution

The fourth proportional to 21,167.22, 31,739.50 and 7,122.58 is: 10,680.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.22 : 31,739.50 = 7,122.58 : x
  2. Step 2: Convert to fraction form
    21,167.22/31,739.50 = 7,122.58/x
  3. Step 3: Cross multiply
    21,167.22x = 31,739.50 × 7,122.58
  4. Step 4: Simplify right side
    21,167.22x = 226,067,195.93
  5. Step 5: Solve for x
    x = 226,067,195.93/21,167.22
  6. Step 6: Final answer
    x = 10,680.06

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1.5x scale

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.