Home / 20,522.28-30,778.96-5,529.05

Finding the Fourth Proportional to 20,522.28, 30,778.96 and 5,529.05

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Solution

The fourth proportional to 20,522.28, 30,778.96 and 5,529.05 is: 8,292.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.28 : 30,778.96 = 5,529.05 : x
  2. Step 2: Convert to fraction form
    20,522.28/30,778.96 = 5,529.05/x
  3. Step 3: Cross multiply
    20,522.28x = 30,778.96 × 5,529.05
  4. Step 4: Simplify right side
    20,522.28x = 170,178,408.79
  5. Step 5: Solve for x
    x = 170,178,408.79/20,522.28
  6. Step 6: Final answer
    x = 8,292.37

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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.