Home / 12,512.36-18,765.80-4,193.56

Finding the Fourth Proportional to 12,512.36, 18,765.80 and 4,193.56

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Solution

The fourth proportional to 12,512.36, 18,765.80 and 4,193.56 is: 6,289.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.36 : 18,765.80 = 4,193.56 : x
  2. Step 2: Convert to fraction form
    12,512.36/18,765.80 = 4,193.56/x
  3. Step 3: Cross multiply
    12,512.36x = 18,765.80 × 4,193.56
  4. Step 4: Simplify right side
    12,512.36x = 78,695,508.25
  5. Step 5: Solve for x
    x = 78,695,508.25/12,512.36
  6. Step 6: Final answer
    x = 6,289.42

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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.