Home / 11,905.91-17,860.68-3,141.51

Finding the Fourth Proportional to 11,905.91, 17,860.68 and 3,141.51

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Solution

The fourth proportional to 11,905.91, 17,860.68 and 3,141.51 is: 4,712.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.91 : 17,860.68 = 3,141.51 : x
  2. Step 2: Convert to fraction form
    11,905.91/17,860.68 = 3,141.51/x
  3. Step 3: Cross multiply
    11,905.91x = 17,860.68 × 3,141.51
  4. Step 4: Simplify right side
    11,905.91x = 56,109,504.83
  5. Step 5: Solve for x
    x = 56,109,504.83/11,905.91
  6. Step 6: Final answer
    x = 4,712.75

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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.