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Finding the Fourth Proportional to 18,603.06, 27,904.20 and 5,455.14

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Solution

The fourth proportional to 18,603.06, 27,904.20 and 5,455.14 is: 8,182.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.06 : 27,904.20 = 5,455.14 : x
  2. Step 2: Convert to fraction form
    18,603.06/27,904.20 = 5,455.14/x
  3. Step 3: Cross multiply
    18,603.06x = 27,904.20 × 5,455.14
  4. Step 4: Simplify right side
    18,603.06x = 152,221,317.59
  5. Step 5: Solve for x
    x = 152,221,317.59/18,603.06
  6. Step 6: Final answer
    x = 8,182.60

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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.