Home / 28,371.88-39,153.46-15,796.90

Finding the Fourth Proportional to 28,371.88, 39,153.46 and 15,796.90

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Solution

The fourth proportional to 28,371.88, 39,153.46 and 15,796.90 is: 21,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.88 : 39,153.46 = 15,796.90 : x
  2. Step 2: Convert to fraction form
    28,371.88/39,153.46 = 15,796.90/x
  3. Step 3: Cross multiply
    28,371.88x = 39,153.46 × 15,796.90
  4. Step 4: Simplify right side
    28,371.88x = 618,503,096.51
  5. Step 5: Solve for x
    x = 618,503,096.51/28,371.88
  6. Step 6: Final answer
    x = 21,799.87

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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.