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Finding the Fourth Proportional to 18,603.48, 27,906.18 and 7,358.88

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Solution

The fourth proportional to 18,603.48, 27,906.18 and 7,358.88 is: 11,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.48 : 27,906.18 = 7,358.88 : x
  2. Step 2: Convert to fraction form
    18,603.48/27,906.18 = 7,358.88/x
  3. Step 3: Cross multiply
    18,603.48x = 27,906.18 × 7,358.88
  4. Step 4: Simplify right side
    18,603.48x = 205,358,229.88
  5. Step 5: Solve for x
    x = 205,358,229.88/18,603.48
  6. Step 6: Final answer
    x = 11,038.70

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1.5x scale

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.