Home / 12,741.77-19,112.76-3,857.13

Finding the Fourth Proportional to 12,741.77, 19,112.76 and 3,857.13

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Solution

The fourth proportional to 12,741.77, 19,112.76 and 3,857.13 is: 5,785.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,741.77 : 19,112.76 = 3,857.13 : x
  2. Step 2: Convert to fraction form
    12,741.77/19,112.76 = 3,857.13/x
  3. Step 3: Cross multiply
    12,741.77x = 19,112.76 × 3,857.13
  4. Step 4: Simplify right side
    12,741.77x = 73,720,399.98
  5. Step 5: Solve for x
    x = 73,720,399.98/12,741.77
  6. Step 6: Final answer
    x = 5,785.73

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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.