Home / 27,988.54-38,617.56-15,886.33

Finding the Fourth Proportional to 27,988.54, 38,617.56 and 15,886.33

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Solution

The fourth proportional to 27,988.54, 38,617.56 and 15,886.33 is: 21,919.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.54 : 38,617.56 = 15,886.33 : x
  2. Step 2: Convert to fraction form
    27,988.54/38,617.56 = 15,886.33/x
  3. Step 3: Cross multiply
    27,988.54x = 38,617.56 × 15,886.33
  4. Step 4: Simplify right side
    27,988.54x = 613,491,205.41
  5. Step 5: Solve for x
    x = 613,491,205.41/27,988.54
  6. Step 6: Final answer
    x = 21,919.37

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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.