Home / 28,236.08-38,965.77-15,660.83

Finding the Fourth Proportional to 28,236.08, 38,965.77 and 15,660.83

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Solution

The fourth proportional to 28,236.08, 38,965.77 and 15,660.83 is: 21,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.08 : 38,965.77 = 15,660.83 : x
  2. Step 2: Convert to fraction form
    28,236.08/38,965.77 = 15,660.83/x
  3. Step 3: Cross multiply
    28,236.08x = 38,965.77 × 15,660.83
  4. Step 4: Simplify right side
    28,236.08x = 610,236,104.96
  5. Step 5: Solve for x
    x = 610,236,104.96/28,236.08
  6. Step 6: Final answer
    x = 21,611.93

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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.