Home / 39,856.10-55,003.90-21,951.10

Finding the Fourth Proportional to 39,856.10, 55,003.90 and 21,951.10

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Solution

The fourth proportional to 39,856.10, 55,003.90 and 21,951.10 is: 30,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,856.10 : 55,003.90 = 21,951.10 : x
  2. Step 2: Convert to fraction form
    39,856.10/55,003.90 = 21,951.10/x
  3. Step 3: Cross multiply
    39,856.10x = 55,003.90 × 21,951.10
  4. Step 4: Simplify right side
    39,856.10x = 1,207,396,272.37
  5. Step 5: Solve for x
    x = 1,207,396,272.37/39,856.10
  6. Step 6: Final answer
    x = 30,293.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.