Home / 14,121.15-21,187.31-6,728.91

Finding the Fourth Proportional to 14,121.15, 21,187.31 and 6,728.91

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Solution

The fourth proportional to 14,121.15, 21,187.31 and 6,728.91 is: 10,096.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.15 : 21,187.31 = 6,728.91 : x
  2. Step 2: Convert to fraction form
    14,121.15/21,187.31 = 6,728.91/x
  3. Step 3: Cross multiply
    14,121.15x = 21,187.31 × 6,728.91
  4. Step 4: Simplify right side
    14,121.15x = 142,567,468.49
  5. Step 5: Solve for x
    x = 142,567,468.49/14,121.15
  6. Step 6: Final answer
    x = 10,096.02

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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.