Home / 20,724.87-28,599.42-11,772.34

Finding the Fourth Proportional to 20,724.87, 28,599.42 and 11,772.34

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Solution

The fourth proportional to 20,724.87, 28,599.42 and 11,772.34 is: 16,245.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.87 : 28,599.42 = 11,772.34 : x
  2. Step 2: Convert to fraction form
    20,724.87/28,599.42 = 11,772.34/x
  3. Step 3: Cross multiply
    20,724.87x = 28,599.42 × 11,772.34
  4. Step 4: Simplify right side
    20,724.87x = 336,682,096.04
  5. Step 5: Solve for x
    x = 336,682,096.04/20,724.87
  6. Step 6: Final answer
    x = 16,245.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.