Home / 28,162.73-38,863.98-15,415.61

Finding the Fourth Proportional to 28,162.73, 38,863.98 and 15,415.61

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Solution

The fourth proportional to 28,162.73, 38,863.98 and 15,415.61 is: 21,273.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.73 : 38,863.98 = 15,415.61 : x
  2. Step 2: Convert to fraction form
    28,162.73/38,863.98 = 15,415.61/x
  3. Step 3: Cross multiply
    28,162.73x = 38,863.98 × 15,415.61
  4. Step 4: Simplify right side
    28,162.73x = 599,111,764.41
  5. Step 5: Solve for x
    x = 599,111,764.41/28,162.73
  6. Step 6: Final answer
    x = 21,273.22

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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.