Home / 27,780.37-38,335.44-15,202.69

Finding the Fourth Proportional to 27,780.37, 38,335.44 and 15,202.69

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Solution

The fourth proportional to 27,780.37, 38,335.44 and 15,202.69 is: 20,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,780.37 : 38,335.44 = 15,202.69 : x
  2. Step 2: Convert to fraction form
    27,780.37/38,335.44 = 15,202.69/x
  3. Step 3: Cross multiply
    27,780.37x = 38,335.44 × 15,202.69
  4. Step 4: Simplify right side
    27,780.37x = 582,801,810.33
  5. Step 5: Solve for x
    x = 582,801,810.33/27,780.37
  6. Step 6: Final answer
    x = 20,978.91

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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.