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Finding the Fourth Proportional to 20,522.01, 30,783.03 and 4,939.65

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Solution

The fourth proportional to 20,522.01, 30,783.03 and 4,939.65 is: 7,409.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.01 : 30,783.03 = 4,939.65 : x
  2. Step 2: Convert to fraction form
    20,522.01/30,783.03 = 4,939.65/x
  3. Step 3: Cross multiply
    20,522.01x = 30,783.03 × 4,939.65
  4. Step 4: Simplify right side
    20,522.01x = 152,057,394.14
  5. Step 5: Solve for x
    x = 152,057,394.14/20,522.01
  6. Step 6: Final answer
    x = 7,409.48

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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.