Home / 20,522.27-30,783.42-4,939.90

Finding the Fourth Proportional to 20,522.27, 30,783.42 and 4,939.90

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Solution

The fourth proportional to 20,522.27, 30,783.42 and 4,939.90 is: 7,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.27 : 30,783.42 = 4,939.90 : x
  2. Step 2: Convert to fraction form
    20,522.27/30,783.42 = 4,939.90/x
  3. Step 3: Cross multiply
    20,522.27x = 30,783.42 × 4,939.90
  4. Step 4: Simplify right side
    20,522.27x = 152,066,939.50
  5. Step 5: Solve for x
    x = 152,066,939.50/20,522.27
  6. Step 6: Final answer
    x = 7,409.85

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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.