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Finding the Fourth Proportional to 18,745.52, 28,118.30 and 4,894.52

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Solution

The fourth proportional to 18,745.52, 28,118.30 and 4,894.52 is: 7,341.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.52 : 28,118.30 = 4,894.52 : x
  2. Step 2: Convert to fraction form
    18,745.52/28,118.30 = 4,894.52/x
  3. Step 3: Cross multiply
    18,745.52x = 28,118.30 × 4,894.52
  4. Step 4: Simplify right side
    18,745.52x = 137,625,416.65
  5. Step 5: Solve for x
    x = 137,625,416.65/18,745.52
  6. Step 6: Final answer
    x = 7,341.78

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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.