Home / 28,620.58-39,498.42-15,877.84

Finding the Fourth Proportional to 28,620.58, 39,498.42 and 15,877.84

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Solution

The fourth proportional to 28,620.58, 39,498.42 and 15,877.84 is: 21,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.58 : 39,498.42 = 15,877.84 : x
  2. Step 2: Convert to fraction form
    28,620.58/39,498.42 = 15,877.84/x
  3. Step 3: Cross multiply
    28,620.58x = 39,498.42 × 15,877.84
  4. Step 4: Simplify right side
    28,620.58x = 627,149,593.01
  5. Step 5: Solve for x
    x = 627,149,593.01/28,620.58
  6. Step 6: Final answer
    x = 21,912.54

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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.