Home / 20,901.52-28,843.71-11,826.79

Finding the Fourth Proportional to 20,901.52, 28,843.71 and 11,826.79

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Solution

The fourth proportional to 20,901.52, 28,843.71 and 11,826.79 is: 16,320.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.52 : 28,843.71 = 11,826.79 : x
  2. Step 2: Convert to fraction form
    20,901.52/28,843.71 = 11,826.79/x
  3. Step 3: Cross multiply
    20,901.52x = 28,843.71 × 11,826.79
  4. Step 4: Simplify right side
    20,901.52x = 341,128,500.99
  5. Step 5: Solve for x
    x = 341,128,500.99/20,901.52
  6. Step 6: Final answer
    x = 16,320.75

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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.