Home / 20,278.98-30,419.31-6,961.12

Finding the Fourth Proportional to 20,278.98, 30,419.31 and 6,961.12

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Solution

The fourth proportional to 20,278.98, 30,419.31 and 6,961.12 is: 10,441.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.98 : 30,419.31 = 6,961.12 : x
  2. Step 2: Convert to fraction form
    20,278.98/30,419.31 = 6,961.12/x
  3. Step 3: Cross multiply
    20,278.98x = 30,419.31 × 6,961.12
  4. Step 4: Simplify right side
    20,278.98x = 211,752,549.24
  5. Step 5: Solve for x
    x = 211,752,549.24/20,278.98
  6. Step 6: Final answer
    x = 10,441.97

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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.