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Finding the Fourth Proportional to 18,258, 27,387 and 4,407

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Solution

The fourth proportional to 18,258, 27,387 and 4,407 is: 6,610.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258 : 27,387 = 4,407 : x
  2. Step 2: Convert to fraction form
    18,258/27,387 = 4,407/x
  3. Step 3: Cross multiply
    18,258x = 27,387 × 4,407
  4. Step 4: Simplify right side
    18,258x = 120,694,509
  5. Step 5: Solve for x
    x = 120,694,509/18,258
  6. Step 6: Final answer
    x = 6,610.50

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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.