Home / 28,832.72-39,789.84-15,912.44

Finding the Fourth Proportional to 28,832.72, 39,789.84 and 15,912.44

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Solution

The fourth proportional to 28,832.72, 39,789.84 and 15,912.44 is: 21,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,832.72 : 39,789.84 = 15,912.44 : x
  2. Step 2: Convert to fraction form
    28,832.72/39,789.84 = 15,912.44/x
  3. Step 3: Cross multiply
    28,832.72x = 39,789.84 × 15,912.44
  4. Step 4: Simplify right side
    28,832.72x = 633,153,441.61
  5. Step 5: Solve for x
    x = 633,153,441.61/28,832.72
  6. Step 6: Final answer
    x = 21,959.55

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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.