Home / 20,626.97-30,940.47-7,479.36

Finding the Fourth Proportional to 20,626.97, 30,940.47 and 7,479.36

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Solution

The fourth proportional to 20,626.97, 30,940.47 and 7,479.36 is: 11,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.97 : 30,940.47 = 7,479.36 : x
  2. Step 2: Convert to fraction form
    20,626.97/30,940.47 = 7,479.36/x
  3. Step 3: Cross multiply
    20,626.97x = 30,940.47 × 7,479.36
  4. Step 4: Simplify right side
    20,626.97x = 231,414,913.70
  5. Step 5: Solve for x
    x = 231,414,913.70/20,626.97
  6. Step 6: Final answer
    x = 11,219.05

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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.