Home / 20,947.26-28,908.88-11,997.58

Finding the Fourth Proportional to 20,947.26, 28,908.88 and 11,997.58

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Solution

The fourth proportional to 20,947.26, 28,908.88 and 11,997.58 is: 16,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.26 : 28,908.88 = 11,997.58 : x
  2. Step 2: Convert to fraction form
    20,947.26/28,908.88 = 11,997.58/x
  3. Step 3: Cross multiply
    20,947.26x = 28,908.88 × 11,997.58
  4. Step 4: Simplify right side
    20,947.26x = 346,836,600.51
  5. Step 5: Solve for x
    x = 346,836,600.51/20,947.26
  6. Step 6: Final answer
    x = 16,557.61

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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.