Home / 20,772.14-31,131.75-14,940.14

Finding the Fourth Proportional to 20,772.14, 31,131.75 and 14,940.14

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Solution

The fourth proportional to 20,772.14, 31,131.75 and 14,940.14 is: 22,391.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.14 : 31,131.75 = 14,940.14 : x
  2. Step 2: Convert to fraction form
    20,772.14/31,131.75 = 14,940.14/x
  3. Step 3: Cross multiply
    20,772.14x = 31,131.75 × 14,940.14
  4. Step 4: Simplify right side
    20,772.14x = 465,112,703.45
  5. Step 5: Solve for x
    x = 465,112,703.45/20,772.14
  6. Step 6: Final answer
    x = 22,391.18

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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.