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Finding the Fourth Proportional to 18,103.94, 27,139.08 and 7,017.86

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Solution

The fourth proportional to 18,103.94, 27,139.08 and 7,017.86 is: 10,520.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.94 : 27,139.08 = 7,017.86 : x
  2. Step 2: Convert to fraction form
    18,103.94/27,139.08 = 7,017.86/x
  3. Step 3: Cross multiply
    18,103.94x = 27,139.08 × 7,017.86
  4. Step 4: Simplify right side
    18,103.94x = 190,458,263.97
  5. Step 5: Solve for x
    x = 190,458,263.97/18,103.94
  6. Step 6: Final answer
    x = 10,520.27

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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.