Home / 14,115.12-21,144.32-6,726.72

Finding the Fourth Proportional to 14,115.12, 21,144.32 and 6,726.72

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Solution

The fourth proportional to 14,115.12, 21,144.32 and 6,726.72 is: 10,076.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.12 : 21,144.32 = 6,726.72 : x
  2. Step 2: Convert to fraction form
    14,115.12/21,144.32 = 6,726.72/x
  3. Step 3: Cross multiply
    14,115.12x = 21,144.32 × 6,726.72
  4. Step 4: Simplify right side
    14,115.12x = 142,231,920.23
  5. Step 5: Solve for x
    x = 142,231,920.23/14,115.12
  6. Step 6: Final answer
    x = 10,076.56

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1.5x scale

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.