Home / 12,178.29-18,265.61-3,857.23

Finding the Fourth Proportional to 12,178.29, 18,265.61 and 3,857.23

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Solution

The fourth proportional to 12,178.29, 18,265.61 and 3,857.23 is: 5,785.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.29 : 18,265.61 = 3,857.23 : x
  2. Step 2: Convert to fraction form
    12,178.29/18,265.61 = 3,857.23/x
  3. Step 3: Cross multiply
    12,178.29x = 18,265.61 × 3,857.23
  4. Step 4: Simplify right side
    12,178.29x = 70,454,658.86
  5. Step 5: Solve for x
    x = 70,454,658.86/12,178.29
  6. Step 6: Final answer
    x = 5,785.27

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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.