Home / 21,097.22-31,637.91-7,942.46

Finding the Fourth Proportional to 21,097.22, 31,637.91 and 7,942.46

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Solution

The fourth proportional to 21,097.22, 31,637.91 and 7,942.46 is: 11,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.22 : 31,637.91 = 7,942.46 : x
  2. Step 2: Convert to fraction form
    21,097.22/31,637.91 = 7,942.46/x
  3. Step 3: Cross multiply
    21,097.22x = 31,637.91 × 7,942.46
  4. Step 4: Simplify right side
    21,097.22x = 251,282,834.66
  5. Step 5: Solve for x
    x = 251,282,834.66/21,097.22
  6. Step 6: Final answer
    x = 11,910.71

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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.