Home / 20,278.67-30,418.84-6,960.81

Finding the Fourth Proportional to 20,278.67, 30,418.84 and 6,960.81

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Solution

The fourth proportional to 20,278.67, 30,418.84 and 6,960.81 is: 10,441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.67 : 30,418.84 = 6,960.81 : x
  2. Step 2: Convert to fraction form
    20,278.67/30,418.84 = 6,960.81/x
  3. Step 3: Cross multiply
    20,278.67x = 30,418.84 × 6,960.81
  4. Step 4: Simplify right side
    20,278.67x = 211,739,765.66
  5. Step 5: Solve for x
    x = 211,739,765.66/20,278.67
  6. Step 6: Final answer
    x = 10,441.50

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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.