Home / 27,854.25-38,440.97-15,918.09

Finding the Fourth Proportional to 27,854.25, 38,440.97 and 15,918.09

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Solution

The fourth proportional to 27,854.25, 38,440.97 and 15,918.09 is: 21,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.25 : 38,440.97 = 15,918.09 : x
  2. Step 2: Convert to fraction form
    27,854.25/38,440.97 = 15,918.09/x
  3. Step 3: Cross multiply
    27,854.25x = 38,440.97 × 15,918.09
  4. Step 4: Simplify right side
    27,854.25x = 611,906,740.56
  5. Step 5: Solve for x
    x = 611,906,740.56/27,854.25
  6. Step 6: Final answer
    x = 21,968.16

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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.