Home / 18,758.25-28,138.32-5,610.74

Finding the Fourth Proportional to 18,758.25, 28,138.32 and 5,610.74

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Solution

The fourth proportional to 18,758.25, 28,138.32 and 5,610.74 is: 8,416.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.25 : 28,138.32 = 5,610.74 : x
  2. Step 2: Convert to fraction form
    18,758.25/28,138.32 = 5,610.74/x
  3. Step 3: Cross multiply
    18,758.25x = 28,138.32 × 5,610.74
  4. Step 4: Simplify right side
    18,758.25x = 157,876,656.87
  5. Step 5: Solve for x
    x = 157,876,656.87/18,758.25
  6. Step 6: Final answer
    x = 8,416.39

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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.