Home / 20,447.05-28,215.52-11,495.94

Finding the Fourth Proportional to 20,447.05, 28,215.52 and 11,495.94

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Solution

The fourth proportional to 20,447.05, 28,215.52 and 11,495.94 is: 15,863.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.05 : 28,215.52 = 11,495.94 : x
  2. Step 2: Convert to fraction form
    20,447.05/28,215.52 = 11,495.94/x
  3. Step 3: Cross multiply
    20,447.05x = 28,215.52 × 11,495.94
  4. Step 4: Simplify right side
    20,447.05x = 324,363,896.25
  5. Step 5: Solve for x
    x = 324,363,896.25/20,447.05
  6. Step 6: Final answer
    x = 15,863.61

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1.5x scale

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.