Home / 20,231.70-30,331.35-8,535.30

Finding the Fourth Proportional to 20,231.70, 30,331.35 and 8,535.30

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Solution

The fourth proportional to 20,231.70, 30,331.35 and 8,535.30 is: 12,796.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.70 : 30,331.35 = 8,535.30 : x
  2. Step 2: Convert to fraction form
    20,231.70/30,331.35 = 8,535.30/x
  3. Step 3: Cross multiply
    20,231.70x = 30,331.35 × 8,535.30
  4. Step 4: Simplify right side
    20,231.70x = 258,887,171.66
  5. Step 5: Solve for x
    x = 258,887,171.66/20,231.70
  6. Step 6: Final answer
    x = 12,796.12

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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.