Home / 27,843.64-38,429.56-21,781.88

Finding the Fourth Proportional to 27,843.64, 38,429.56 and 21,781.88

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Solution

The fourth proportional to 27,843.64, 38,429.56 and 21,781.88 is: 30,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,843.64 : 38,429.56 = 21,781.88 : x
  2. Step 2: Convert to fraction form
    27,843.64/38,429.56 = 21,781.88/x
  3. Step 3: Cross multiply
    27,843.64x = 38,429.56 × 21,781.88
  4. Step 4: Simplify right side
    27,843.64x = 837,068,064.37
  5. Step 5: Solve for x
    x = 837,068,064.37/27,843.64
  6. Step 6: Final answer
    x = 30,063.17

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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.