Home / 20,230.70-30,331.65-7,745.90

Finding the Fourth Proportional to 20,230.70, 30,331.65 and 7,745.90

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Solution

The fourth proportional to 20,230.70, 30,331.65 and 7,745.90 is: 11,613.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.70 : 30,331.65 = 7,745.90 : x
  2. Step 2: Convert to fraction form
    20,230.70/30,331.65 = 7,745.90/x
  3. Step 3: Cross multiply
    20,230.70x = 30,331.65 × 7,745.90
  4. Step 4: Simplify right side
    20,230.70x = 234,945,927.74
  5. Step 5: Solve for x
    x = 234,945,927.74/20,230.70
  6. Step 6: Final answer
    x = 11,613.34

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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.