Home / 28,076.88-38,745.48-15,329.58

Finding the Fourth Proportional to 28,076.88, 38,745.48 and 15,329.58

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Solution

The fourth proportional to 28,076.88, 38,745.48 and 15,329.58 is: 21,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.88 : 38,745.48 = 15,329.58 : x
  2. Step 2: Convert to fraction form
    28,076.88/38,745.48 = 15,329.58/x
  3. Step 3: Cross multiply
    28,076.88x = 38,745.48 × 15,329.58
  4. Step 4: Simplify right side
    28,076.88x = 593,951,935.30
  5. Step 5: Solve for x
    x = 593,951,935.30/28,076.88
  6. Step 6: Final answer
    x = 21,154.48

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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.