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Finding the Fourth Proportional to 18,155.97, 27,237.39 and 6,309.30

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Solution

The fourth proportional to 18,155.97, 27,237.39 and 6,309.30 is: 9,465.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.97 : 27,237.39 = 6,309.30 : x
  2. Step 2: Convert to fraction form
    18,155.97/27,237.39 = 6,309.30/x
  3. Step 3: Cross multiply
    18,155.97x = 27,237.39 × 6,309.30
  4. Step 4: Simplify right side
    18,155.97x = 171,848,864.73
  5. Step 5: Solve for x
    x = 171,848,864.73/18,155.97
  6. Step 6: Final answer
    x = 9,465.14

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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.