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Finding the Fourth Proportional to 18,005.91, 27,008.86 and 4,858.28

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Solution

The fourth proportional to 18,005.91, 27,008.86 and 4,858.28 is: 7,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.91 : 27,008.86 = 4,858.28 : x
  2. Step 2: Convert to fraction form
    18,005.91/27,008.86 = 4,858.28/x
  3. Step 3: Cross multiply
    18,005.91x = 27,008.86 × 4,858.28
  4. Step 4: Simplify right side
    18,005.91x = 131,216,604.94
  5. Step 5: Solve for x
    x = 131,216,604.94/18,005.91
  6. Step 6: Final answer
    x = 7,287.42

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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.