Home / 12,385.78-18,583.22-5,725.49

Finding the Fourth Proportional to 12,385.78, 18,583.22 and 5,725.49

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Solution

The fourth proportional to 12,385.78, 18,583.22 and 5,725.49 is: 8,590.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.78 : 18,583.22 = 5,725.49 : x
  2. Step 2: Convert to fraction form
    12,385.78/18,583.22 = 5,725.49/x
  3. Step 3: Cross multiply
    12,385.78x = 18,583.22 × 5,725.49
  4. Step 4: Simplify right side
    12,385.78x = 106,397,961.68
  5. Step 5: Solve for x
    x = 106,397,961.68/12,385.78
  6. Step 6: Final answer
    x = 8,590.33

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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.