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Finding the Fourth Proportional to 18,103.15, 27,137.71 and 9,335.71

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Solution

The fourth proportional to 18,103.15, 27,137.71 and 9,335.71 is: 13,994.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.15 : 27,137.71 = 9,335.71 : x
  2. Step 2: Convert to fraction form
    18,103.15/27,137.71 = 9,335.71/x
  3. Step 3: Cross multiply
    18,103.15x = 27,137.71 × 9,335.71
  4. Step 4: Simplify right side
    18,103.15x = 253,349,790.62
  5. Step 5: Solve for x
    x = 253,349,790.62/18,103.15
  6. Step 6: Final answer
    x = 13,994.79

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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.