Home / 15,828.39-21,843.78-8,754.66

Finding the Fourth Proportional to 15,828.39, 21,843.78 and 8,754.66

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Solution

The fourth proportional to 15,828.39, 21,843.78 and 8,754.66 is: 12,081.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.39 : 21,843.78 = 8,754.66 : x
  2. Step 2: Convert to fraction form
    15,828.39/21,843.78 = 8,754.66/x
  3. Step 3: Cross multiply
    15,828.39x = 21,843.78 × 8,754.66
  4. Step 4: Simplify right side
    15,828.39x = 191,234,867.01
  5. Step 5: Solve for x
    x = 191,234,867.01/15,828.39
  6. Step 6: Final answer
    x = 12,081.76

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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.