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Finding the Fourth Proportional to 18,055.86, 27,078.30 and 6,961.68

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Solution

The fourth proportional to 18,055.86, 27,078.30 and 6,961.68 is: 10,440.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,055.86 : 27,078.30 = 6,961.68 : x
  2. Step 2: Convert to fraction form
    18,055.86/27,078.30 = 6,961.68/x
  3. Step 3: Cross multiply
    18,055.86x = 27,078.30 × 6,961.68
  4. Step 4: Simplify right side
    18,055.86x = 188,510,459.54
  5. Step 5: Solve for x
    x = 188,510,459.54/18,055.86
  6. Step 6: Final answer
    x = 10,440.40

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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.