Home / 20,886.52-28,823.97-11,935.48

Finding the Fourth Proportional to 20,886.52, 28,823.97 and 11,935.48

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Solution

The fourth proportional to 20,886.52, 28,823.97 and 11,935.48 is: 16,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.52 : 28,823.97 = 11,935.48 : x
  2. Step 2: Convert to fraction form
    20,886.52/28,823.97 = 11,935.48/x
  3. Step 3: Cross multiply
    20,886.52x = 28,823.97 × 11,935.48
  4. Step 4: Simplify right side
    20,886.52x = 344,027,917.46
  5. Step 5: Solve for x
    x = 344,027,917.46/20,886.52
  6. Step 6: Final answer
    x = 16,471.29

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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.