Home / 11,904.32-17,857.22-3,139.23

Finding the Fourth Proportional to 11,904.32, 17,857.22 and 3,139.23

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Solution

The fourth proportional to 11,904.32, 17,857.22 and 3,139.23 is: 4,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,904.32 : 17,857.22 = 3,139.23 : x
  2. Step 2: Convert to fraction form
    11,904.32/17,857.22 = 3,139.23/x
  3. Step 3: Cross multiply
    11,904.32x = 17,857.22 × 3,139.23
  4. Step 4: Simplify right side
    11,904.32x = 56,057,905.04
  5. Step 5: Solve for x
    x = 56,057,905.04/11,904.32
  6. Step 6: Final answer
    x = 4,709.04

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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.