Home / 28,129.77-38,832.39-16,190.76

Finding the Fourth Proportional to 28,129.77, 38,832.39 and 16,190.76

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Solution

The fourth proportional to 28,129.77, 38,832.39 and 16,190.76 is: 22,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.77 : 38,832.39 = 16,190.76 : x
  2. Step 2: Convert to fraction form
    28,129.77/38,832.39 = 16,190.76/x
  3. Step 3: Cross multiply
    28,129.77x = 38,832.39 × 16,190.76
  4. Step 4: Simplify right side
    28,129.77x = 628,725,906.72
  5. Step 5: Solve for x
    x = 628,725,906.72/28,129.77
  6. Step 6: Final answer
    x = 22,350.91

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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.