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Finding the Fourth Proportional to 18,603.42, 27,906.57 and 5,276.19

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Solution

The fourth proportional to 18,603.42, 27,906.57 and 5,276.19 is: 7,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.42 : 27,906.57 = 5,276.19 : x
  2. Step 2: Convert to fraction form
    18,603.42/27,906.57 = 5,276.19/x
  3. Step 3: Cross multiply
    18,603.42x = 27,906.57 × 5,276.19
  4. Step 4: Simplify right side
    18,603.42x = 147,240,199.65
  5. Step 5: Solve for x
    x = 147,240,199.65/18,603.42
  6. Step 6: Final answer
    x = 7,914.68

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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.