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Finding the Fourth Proportional to 18,218.52, 27,327.81 and 5,070.90

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Solution

The fourth proportional to 18,218.52, 27,327.81 and 5,070.90 is: 7,606.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.52 : 27,327.81 = 5,070.90 : x
  2. Step 2: Convert to fraction form
    18,218.52/27,327.81 = 5,070.90/x
  3. Step 3: Cross multiply
    18,218.52x = 27,327.81 × 5,070.90
  4. Step 4: Simplify right side
    18,218.52x = 138,576,591.73
  5. Step 5: Solve for x
    x = 138,576,591.73/18,218.52
  6. Step 6: Final answer
    x = 7,606.36

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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.