Home / 19,940.27-29,910.30-5,147.93

Finding the Fourth Proportional to 19,940.27, 29,910.30 and 5,147.93

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Solution

The fourth proportional to 19,940.27, 29,910.30 and 5,147.93 is: 7,721.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.27 : 29,910.30 = 5,147.93 : x
  2. Step 2: Convert to fraction form
    19,940.27/29,910.30 = 5,147.93/x
  3. Step 3: Cross multiply
    19,940.27x = 29,910.30 × 5,147.93
  4. Step 4: Simplify right side
    19,940.27x = 153,976,130.68
  5. Step 5: Solve for x
    x = 153,976,130.68/19,940.27
  6. Step 6: Final answer
    x = 7,721.87

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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.