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Finding the Fourth Proportional to 18,603.62, 27,898.56 and 6,120

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Solution

The fourth proportional to 18,603.62, 27,898.56 and 6,120 is: 9,177.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.62 : 27,898.56 = 6,120 : x
  2. Step 2: Convert to fraction form
    18,603.62/27,898.56 = 6,120/x
  3. Step 3: Cross multiply
    18,603.62x = 27,898.56 × 6,120
  4. Step 4: Simplify right side
    18,603.62x = 170,739,187.20
  5. Step 5: Solve for x
    x = 170,739,187.20/18,603.62
  6. Step 6: Final answer
    x = 9,177.74

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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.