Home / 28,088.97-38,725.79-21,635.83

Finding the Fourth Proportional to 28,088.97, 38,725.79 and 21,635.83

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Solution

The fourth proportional to 28,088.97, 38,725.79 and 21,635.83 is: 29,828.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.97 : 38,725.79 = 21,635.83 : x
  2. Step 2: Convert to fraction form
    28,088.97/38,725.79 = 21,635.83/x
  3. Step 3: Cross multiply
    28,088.97x = 38,725.79 × 21,635.83
  4. Step 4: Simplify right side
    28,088.97x = 837,864,609.06
  5. Step 5: Solve for x
    x = 837,864,609.06/28,088.97
  6. Step 6: Final answer
    x = 29,828.95

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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.