Home / 21,942.51-32,917.19-7,147.99

Finding the Fourth Proportional to 21,942.51, 32,917.19 and 7,147.99

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Solution

The fourth proportional to 21,942.51, 32,917.19 and 7,147.99 is: 10,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942.51 : 32,917.19 = 7,147.99 : x
  2. Step 2: Convert to fraction form
    21,942.51/32,917.19 = 7,147.99/x
  3. Step 3: Cross multiply
    21,942.51x = 32,917.19 × 7,147.99
  4. Step 4: Simplify right side
    21,942.51x = 235,291,744.95
  5. Step 5: Solve for x
    x = 235,291,744.95/21,942.51
  6. Step 6: Final answer
    x = 10,723.10

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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.