Home / 14,112.12-21,139.82-6,723.72

Finding the Fourth Proportional to 14,112.12, 21,139.82 and 6,723.72

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Solution

The fourth proportional to 14,112.12, 21,139.82 and 6,723.72 is: 10,072.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,112.12 : 21,139.82 = 6,723.72 : x
  2. Step 2: Convert to fraction form
    14,112.12/21,139.82 = 6,723.72/x
  3. Step 3: Cross multiply
    14,112.12x = 21,139.82 × 6,723.72
  4. Step 4: Simplify right side
    14,112.12x = 142,138,230.53
  5. Step 5: Solve for x
    x = 142,138,230.53/14,112.12
  6. Step 6: Final answer
    x = 10,072.07

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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.