Home / 19,671.48-27,147.78-11,288.52

Finding the Fourth Proportional to 19,671.48, 27,147.78 and 11,288.52

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Solution

The fourth proportional to 19,671.48, 27,147.78 and 11,288.52 is: 15,578.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.48 : 27,147.78 = 11,288.52 : x
  2. Step 2: Convert to fraction form
    19,671.48/27,147.78 = 11,288.52/x
  3. Step 3: Cross multiply
    19,671.48x = 27,147.78 × 11,288.52
  4. Step 4: Simplify right side
    19,671.48x = 306,458,257.49
  5. Step 5: Solve for x
    x = 306,458,257.49/19,671.48
  6. Step 6: Final answer
    x = 15,578.81

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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.