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Finding the Fourth Proportional to 18,603.36, 27,904.32 and 6,291.36

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Solution

The fourth proportional to 18,603.36, 27,904.32 and 6,291.36 is: 9,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.36 : 27,904.32 = 6,291.36 : x
  2. Step 2: Convert to fraction form
    18,603.36/27,904.32 = 6,291.36/x
  3. Step 3: Cross multiply
    18,603.36x = 27,904.32 × 6,291.36
  4. Step 4: Simplify right side
    18,603.36x = 175,556,122.68
  5. Step 5: Solve for x
    x = 175,556,122.68/18,603.36
  6. Step 6: Final answer
    x = 9,436.80

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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.