Home / 12,005.13-18,007.70-3,797.13

Finding the Fourth Proportional to 12,005.13, 18,007.70 and 3,797.13

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Solution

The fourth proportional to 12,005.13, 18,007.70 and 3,797.13 is: 5,695.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.13 : 18,007.70 = 3,797.13 : x
  2. Step 2: Convert to fraction form
    12,005.13/18,007.70 = 3,797.13/x
  3. Step 3: Cross multiply
    12,005.13x = 18,007.70 × 3,797.13
  4. Step 4: Simplify right side
    12,005.13x = 68,377,577.90
  5. Step 5: Solve for x
    x = 68,377,577.90/12,005.13
  6. Step 6: Final answer
    x = 5,695.70

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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.