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Finding the Fourth Proportional to 18,506.84, 27,761.52 and 6,820.88

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Solution

The fourth proportional to 18,506.84, 27,761.52 and 6,820.88 is: 10,231.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.84 : 27,761.52 = 6,820.88 : x
  2. Step 2: Convert to fraction form
    18,506.84/27,761.52 = 6,820.88/x
  3. Step 3: Cross multiply
    18,506.84x = 27,761.52 × 6,820.88
  4. Step 4: Simplify right side
    18,506.84x = 189,357,996.54
  5. Step 5: Solve for x
    x = 189,357,996.54/18,506.84
  6. Step 6: Final answer
    x = 10,231.78

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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.