Home / 20,469.08-30,700.19-5,679.50

Finding the Fourth Proportional to 20,469.08, 30,700.19 and 5,679.50

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Solution

The fourth proportional to 20,469.08, 30,700.19 and 5,679.50 is: 8,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.08 : 30,700.19 = 5,679.50 : x
  2. Step 2: Convert to fraction form
    20,469.08/30,700.19 = 5,679.50/x
  3. Step 3: Cross multiply
    20,469.08x = 30,700.19 × 5,679.50
  4. Step 4: Simplify right side
    20,469.08x = 174,361,589.80
  5. Step 5: Solve for x
    x = 174,361,589.80/20,469.08
  6. Step 6: Final answer
    x = 8,518.29

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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.