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Finding the Fourth Proportional to 18,285.20, 27,427.79 and 4,434.20

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Solution

The fourth proportional to 18,285.20, 27,427.79 and 4,434.20 is: 6,651.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.20 : 27,427.79 = 4,434.20 : x
  2. Step 2: Convert to fraction form
    18,285.20/27,427.79 = 4,434.20/x
  3. Step 3: Cross multiply
    18,285.20x = 27,427.79 × 4,434.20
  4. Step 4: Simplify right side
    18,285.20x = 121,620,147.11
  5. Step 5: Solve for x
    x = 121,620,147.11/18,285.20
  6. Step 6: Final answer
    x = 6,651.29

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Similar ratio
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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.