Home / 20,579.94-30,836.16-8,724.24

Finding the Fourth Proportional to 20,579.94, 30,836.16 and 8,724.24

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Solution

The fourth proportional to 20,579.94, 30,836.16 and 8,724.24 is: 13,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.94 : 30,836.16 = 8,724.24 : x
  2. Step 2: Convert to fraction form
    20,579.94/30,836.16 = 8,724.24/x
  3. Step 3: Cross multiply
    20,579.94x = 30,836.16 × 8,724.24
  4. Step 4: Simplify right side
    20,579.94x = 269,022,060.52
  5. Step 5: Solve for x
    x = 269,022,060.52/20,579.94
  6. Step 6: Final answer
    x = 13,072.05

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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.