Home / 20,110.70-30,177.81-8,422.94

Finding the Fourth Proportional to 20,110.70, 30,177.81 and 8,422.94

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Solution

The fourth proportional to 20,110.70, 30,177.81 and 8,422.94 is: 12,639.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.70 : 30,177.81 = 8,422.94 : x
  2. Step 2: Convert to fraction form
    20,110.70/30,177.81 = 8,422.94/x
  3. Step 3: Cross multiply
    20,110.70x = 30,177.81 × 8,422.94
  4. Step 4: Simplify right side
    20,110.70x = 254,185,882.96
  5. Step 5: Solve for x
    x = 254,185,882.96/20,110.70
  6. Step 6: Final answer
    x = 12,639.34

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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.