Home / 28,087.97-38,724.41-21,634.83

Finding the Fourth Proportional to 28,087.97, 38,724.41 and 21,634.83

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Solution

The fourth proportional to 28,087.97, 38,724.41 and 21,634.83 is: 29,827.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.97 : 38,724.41 = 21,634.83 : x
  2. Step 2: Convert to fraction form
    28,087.97/38,724.41 = 21,634.83/x
  3. Step 3: Cross multiply
    28,087.97x = 38,724.41 × 21,634.83
  4. Step 4: Simplify right side
    28,087.97x = 837,796,081.29
  5. Step 5: Solve for x
    x = 837,796,081.29/28,087.97
  6. Step 6: Final answer
    x = 29,827.58

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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.