Home / 11,908.60-17,863.80-3,143.28

Finding the Fourth Proportional to 11,908.60, 17,863.80 and 3,143.28

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Solution

The fourth proportional to 11,908.60, 17,863.80 and 3,143.28 is: 4,715.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,908.60 : 17,863.80 = 3,143.28 : x
  2. Step 2: Convert to fraction form
    11,908.60/17,863.80 = 3,143.28/x
  3. Step 3: Cross multiply
    11,908.60x = 17,863.80 × 3,143.28
  4. Step 4: Simplify right side
    11,908.60x = 56,150,925.26
  5. Step 5: Solve for x
    x = 56,150,925.26/11,908.60
  6. Step 6: Final answer
    x = 4,715.16

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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.