Home / 28,830.72-39,787.08-15,910.44

Finding the Fourth Proportional to 28,830.72, 39,787.08 and 15,910.44

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Solution

The fourth proportional to 28,830.72, 39,787.08 and 15,910.44 is: 21,956.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.72 : 39,787.08 = 15,910.44 : x
  2. Step 2: Convert to fraction form
    28,830.72/39,787.08 = 15,910.44/x
  3. Step 3: Cross multiply
    28,830.72x = 39,787.08 × 15,910.44
  4. Step 4: Simplify right side
    28,830.72x = 633,029,949.12
  5. Step 5: Solve for x
    x = 633,029,949.12/28,830.72
  6. Step 6: Final answer
    x = 21,956.79

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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.