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Finding the Fourth Proportional to 18,036, 27,054 and 10,139.04

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Solution

The fourth proportional to 18,036, 27,054 and 10,139.04 is: 15,208.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,036 : 27,054 = 10,139.04 : x
  2. Step 2: Convert to fraction form
    18,036/27,054 = 10,139.04/x
  3. Step 3: Cross multiply
    18,036x = 27,054 × 10,139.04
  4. Step 4: Simplify right side
    18,036x = 274,301,588.16
  5. Step 5: Solve for x
    x = 274,301,588.16/18,036
  6. Step 6: Final answer
    x = 15,208.56

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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.