Home / 12,265.29-18,400.50-3,945.85

Finding the Fourth Proportional to 12,265.29, 18,400.50 and 3,945.85

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Solution

The fourth proportional to 12,265.29, 18,400.50 and 3,945.85 is: 5,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,265.29 : 18,400.50 = 3,945.85 : x
  2. Step 2: Convert to fraction form
    12,265.29/18,400.50 = 3,945.85/x
  3. Step 3: Cross multiply
    12,265.29x = 18,400.50 × 3,945.85
  4. Step 4: Simplify right side
    12,265.29x = 72,605,566.92
  5. Step 5: Solve for x
    x = 72,605,566.92/12,265.29
  6. Step 6: Final answer
    x = 5,919.60

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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.