Home / 13,959.21-20,939.72-6,168

Finding the Fourth Proportional to 13,959.21, 20,939.72 and 6,168

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Solution

The fourth proportional to 13,959.21, 20,939.72 and 6,168 is: 9,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.21 : 20,939.72 = 6,168 : x
  2. Step 2: Convert to fraction form
    13,959.21/20,939.72 = 6,168/x
  3. Step 3: Cross multiply
    13,959.21x = 20,939.72 × 6,168
  4. Step 4: Simplify right side
    13,959.21x = 129,156,162.12
  5. Step 5: Solve for x
    x = 129,156,162.12/13,959.21
  6. Step 6: Final answer
    x = 9,252.40

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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.