Home / 20,015.20-30,022.79-5,223.99

Finding the Fourth Proportional to 20,015.20, 30,022.79 and 5,223.99

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Solution

The fourth proportional to 20,015.20, 30,022.79 and 5,223.99 is: 7,835.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.20 : 30,022.79 = 5,223.99 : x
  2. Step 2: Convert to fraction form
    20,015.20/30,022.79 = 5,223.99/x
  3. Step 3: Cross multiply
    20,015.20x = 30,022.79 × 5,223.99
  4. Step 4: Simplify right side
    20,015.20x = 156,838,617.68
  5. Step 5: Solve for x
    x = 156,838,617.68/20,015.20
  6. Step 6: Final answer
    x = 7,835.98

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Similar ratio
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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.