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Finding the Fourth Proportional to 20,553.81, 30,818.75 and 8,059.19

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Solution

The fourth proportional to 20,553.81, 30,818.75 and 8,059.19 is: 12,084.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.81 : 30,818.75 = 8,059.19 : x
  2. Step 2: Convert to fraction form
    20,553.81/30,818.75 = 8,059.19/x
  3. Step 3: Cross multiply
    20,553.81x = 30,818.75 × 8,059.19
  4. Step 4: Simplify right side
    20,553.81x = 248,373,967.42
  5. Step 5: Solve for x
    x = 248,373,967.42/20,553.81
  6. Step 6: Final answer
    x = 12,084.09

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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.