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Finding the Fourth Proportional to 18,203.70, 27,305.55 and 11,291.70

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Solution

The fourth proportional to 18,203.70, 27,305.55 and 11,291.70 is: 16,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.70 : 27,305.55 = 11,291.70 : x
  2. Step 2: Convert to fraction form
    18,203.70/27,305.55 = 11,291.70/x
  3. Step 3: Cross multiply
    18,203.70x = 27,305.55 × 11,291.70
  4. Step 4: Simplify right side
    18,203.70x = 308,326,078.94
  5. Step 5: Solve for x
    x = 308,326,078.94/18,203.70
  6. Step 6: Final answer
    x = 16,937.55

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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.