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Finding the Fourth Proportional to 20,579.34, 30,881.62 and 8,892.30

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Solution

The fourth proportional to 20,579.34, 30,881.62 and 8,892.30 is: 13,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.34 : 30,881.62 = 8,892.30 : x
  2. Step 2: Convert to fraction form
    20,579.34/30,881.62 = 8,892.30/x
  3. Step 3: Cross multiply
    20,579.34x = 30,881.62 × 8,892.30
  4. Step 4: Simplify right side
    20,579.34x = 274,608,629.53
  5. Step 5: Solve for x
    x = 274,608,629.53/20,579.34
  6. Step 6: Final answer
    x = 13,343.90

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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.