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Finding the Fourth Proportional to 20,612.00, 30,922.19 and 8,765.75

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Solution

The fourth proportional to 20,612.00, 30,922.19 and 8,765.75 is: 13,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.00 : 30,922.19 = 8,765.75 : x
  2. Step 2: Convert to fraction form
    20,612.00/30,922.19 = 8,765.75/x
  3. Step 3: Cross multiply
    20,612.00x = 30,922.19 × 8,765.75
  4. Step 4: Simplify right side
    20,612.00x = 271,055,988.55
  5. Step 5: Solve for x
    x = 271,055,988.55/20,612.00
  6. Step 6: Final answer
    x = 13,150.40

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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.