Home / 11,621.57-17,432.19-2,856.56

Finding the Fourth Proportional to 11,621.57, 17,432.19 and 2,856.56

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Solution

The fourth proportional to 11,621.57, 17,432.19 and 2,856.56 is: 4,284.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.57 : 17,432.19 = 2,856.56 : x
  2. Step 2: Convert to fraction form
    11,621.57/17,432.19 = 2,856.56/x
  3. Step 3: Cross multiply
    11,621.57x = 17,432.19 × 2,856.56
  4. Step 4: Simplify right side
    11,621.57x = 49,796,009.51
  5. Step 5: Solve for x
    x = 49,796,009.51/11,621.57
  6. Step 6: Final answer
    x = 4,284.79

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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.