Home / 20,901.51-28,843.72-11,826.79

Finding the Fourth Proportional to 20,901.51, 28,843.72 and 11,826.79

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Solution

The fourth proportional to 20,901.51, 28,843.72 and 11,826.79 is: 16,320.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.51 : 28,843.72 = 11,826.79 : x
  2. Step 2: Convert to fraction form
    20,901.51/28,843.72 = 11,826.79/x
  3. Step 3: Cross multiply
    20,901.51x = 28,843.72 × 11,826.79
  4. Step 4: Simplify right side
    20,901.51x = 341,128,517.58
  5. Step 5: Solve for x
    x = 341,128,517.58/20,901.51
  6. Step 6: Final answer
    x = 16,320.76

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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.