Home / 20,441.70-30,648.78-7,111.26

Finding the Fourth Proportional to 20,441.70, 30,648.78 and 7,111.26

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Solution

The fourth proportional to 20,441.70, 30,648.78 and 7,111.26 is: 10,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,441.70 : 30,648.78 = 7,111.26 : x
  2. Step 2: Convert to fraction form
    20,441.70/30,648.78 = 7,111.26/x
  3. Step 3: Cross multiply
    20,441.70x = 30,648.78 × 7,111.26
  4. Step 4: Simplify right side
    20,441.70x = 217,951,443.26
  5. Step 5: Solve for x
    x = 217,951,443.26/20,441.70
  6. Step 6: Final answer
    x = 10,662.10

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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.