Home / 27,781.96-38,299.25-19,810.36

Finding the Fourth Proportional to 27,781.96, 38,299.25 and 19,810.36

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Solution

The fourth proportional to 27,781.96, 38,299.25 and 19,810.36 is: 27,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.96 : 38,299.25 = 19,810.36 : x
  2. Step 2: Convert to fraction form
    27,781.96/38,299.25 = 19,810.36/x
  3. Step 3: Cross multiply
    27,781.96x = 38,299.25 × 19,810.36
  4. Step 4: Simplify right side
    27,781.96x = 758,721,930.23
  5. Step 5: Solve for x
    x = 758,721,930.23/27,781.96
  6. Step 6: Final answer
    x = 27,309.88

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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.