Home / 27,781.73-38,338.40-15,845.27

Finding the Fourth Proportional to 27,781.73, 38,338.40 and 15,845.27

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Solution

The fourth proportional to 27,781.73, 38,338.40 and 15,845.27 is: 21,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.73 : 38,338.40 = 15,845.27 : x
  2. Step 2: Convert to fraction form
    27,781.73/38,338.40 = 15,845.27/x
  3. Step 3: Cross multiply
    27,781.73x = 38,338.40 × 15,845.27
  4. Step 4: Simplify right side
    27,781.73x = 607,482,087.87
  5. Step 5: Solve for x
    x = 607,482,087.87/27,781.73
  6. Step 6: Final answer
    x = 21,866.25

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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.