Home / 27,631.20-38,139.30-19,696.44

Finding the Fourth Proportional to 27,631.20, 38,139.30 and 19,696.44

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Solution

The fourth proportional to 27,631.20, 38,139.30 and 19,696.44 is: 27,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,631.20 : 38,139.30 = 19,696.44 : x
  2. Step 2: Convert to fraction form
    27,631.20/38,139.30 = 19,696.44/x
  3. Step 3: Cross multiply
    27,631.20x = 38,139.30 × 19,696.44
  4. Step 4: Simplify right side
    27,631.20x = 751,208,434.09
  5. Step 5: Solve for x
    x = 751,208,434.09/27,631.20
  6. Step 6: Final answer
    x = 27,186.96

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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.