Home / 20,844.40-31,188.84-20,611.12

Finding the Fourth Proportional to 20,844.40, 31,188.84 and 20,611.12

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Solution

The fourth proportional to 20,844.40, 31,188.84 and 20,611.12 is: 30,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.40 : 31,188.84 = 20,611.12 : x
  2. Step 2: Convert to fraction form
    20,844.40/31,188.84 = 20,611.12/x
  3. Step 3: Cross multiply
    20,844.40x = 31,188.84 × 20,611.12
  4. Step 4: Simplify right side
    20,844.40x = 642,836,923.90
  5. Step 5: Solve for x
    x = 642,836,923.90/20,844.40
  6. Step 6: Final answer
    x = 30,839.79

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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.