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Finding the Fourth Proportional to 20,061.90, 30,103.65 and 8,376.30

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Solution

The fourth proportional to 20,061.90, 30,103.65 and 8,376.30 is: 12,568.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.90 : 30,103.65 = 8,376.30 : x
  2. Step 2: Convert to fraction form
    20,061.90/30,103.65 = 8,376.30/x
  3. Step 3: Cross multiply
    20,061.90x = 30,103.65 × 8,376.30
  4. Step 4: Simplify right side
    20,061.90x = 252,157,203.50
  5. Step 5: Solve for x
    x = 252,157,203.50/20,061.90
  6. Step 6: Final answer
    x = 12,568.96

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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.