Home / 28,219.92-42,329.46-6,872.84

Finding the Fourth Proportional to 28,219.92, 42,329.46 and 6,872.84

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Solution

The fourth proportional to 28,219.92, 42,329.46 and 6,872.84 is: 10,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.92 : 42,329.46 = 6,872.84 : x
  2. Step 2: Convert to fraction form
    28,219.92/42,329.46 = 6,872.84/x
  3. Step 3: Cross multiply
    28,219.92x = 42,329.46 × 6,872.84
  4. Step 4: Simplify right side
    28,219.92x = 290,923,394.22
  5. Step 5: Solve for x
    x = 290,923,394.22/28,219.92
  6. Step 6: Final answer
    x = 10,309.15

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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.