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Finding the Fourth Proportional to 18,005.25, 27,005.11 and 6,917.16

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Solution

The fourth proportional to 18,005.25, 27,005.11 and 6,917.16 is: 10,374.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.25 : 27,005.11 = 6,917.16 : x
  2. Step 2: Convert to fraction form
    18,005.25/27,005.11 = 6,917.16/x
  3. Step 3: Cross multiply
    18,005.25x = 27,005.11 × 6,917.16
  4. Step 4: Simplify right side
    18,005.25x = 186,798,750.66
  5. Step 5: Solve for x
    x = 186,798,750.66/18,005.25
  6. Step 6: Final answer
    x = 10,374.68

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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.