Home / 20,571.13-30,850.58-8,724.74

Finding the Fourth Proportional to 20,571.13, 30,850.58 and 8,724.74

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Solution

The fourth proportional to 20,571.13, 30,850.58 and 8,724.74 is: 13,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.13 : 30,850.58 = 8,724.74 : x
  2. Step 2: Convert to fraction form
    20,571.13/30,850.58 = 8,724.74/x
  3. Step 3: Cross multiply
    20,571.13x = 30,850.58 × 8,724.74
  4. Step 4: Simplify right side
    20,571.13x = 269,163,156.91
  5. Step 5: Solve for x
    x = 269,163,156.91/20,571.13
  6. Step 6: Final answer
    x = 13,084.51

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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.