Home / 20,574.40-30,861.60-6,724.80

Finding the Fourth Proportional to 20,574.40, 30,861.60 and 6,724.80

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Solution

The fourth proportional to 20,574.40, 30,861.60 and 6,724.80 is: 10,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.40 : 30,861.60 = 6,724.80 : x
  2. Step 2: Convert to fraction form
    20,574.40/30,861.60 = 6,724.80/x
  3. Step 3: Cross multiply
    20,574.40x = 30,861.60 × 6,724.80
  4. Step 4: Simplify right side
    20,574.40x = 207,538,087.68
  5. Step 5: Solve for x
    x = 207,538,087.68/20,574.40
  6. Step 6: Final answer
    x = 10,087.20

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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.