Home / 27,739.92-38,280.84-15,644.28

Finding the Fourth Proportional to 27,739.92, 38,280.84 and 15,644.28

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Solution

The fourth proportional to 27,739.92, 38,280.84 and 15,644.28 is: 21,588.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.92 : 38,280.84 = 15,644.28 : x
  2. Step 2: Convert to fraction form
    27,739.92/38,280.84 = 15,644.28/x
  3. Step 3: Cross multiply
    27,739.92x = 38,280.84 × 15,644.28
  4. Step 4: Simplify right side
    27,739.92x = 598,876,179.60
  5. Step 5: Solve for x
    x = 598,876,179.60/27,739.92
  6. Step 6: Final answer
    x = 21,588.97

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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.