Home / 13,977.97-20,968.42-6,959.72

Finding the Fourth Proportional to 13,977.97, 20,968.42 and 6,959.72

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Solution

The fourth proportional to 13,977.97, 20,968.42 and 6,959.72 is: 10,440.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.97 : 20,968.42 = 6,959.72 : x
  2. Step 2: Convert to fraction form
    13,977.97/20,968.42 = 6,959.72/x
  3. Step 3: Cross multiply
    13,977.97x = 20,968.42 × 6,959.72
  4. Step 4: Simplify right side
    13,977.97x = 145,934,332.04
  5. Step 5: Solve for x
    x = 145,934,332.04/13,977.97
  6. Step 6: Final answer
    x = 10,440.31

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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.