Home / 28,362.96-39,142.44-15,787.44

Finding the Fourth Proportional to 28,362.96, 39,142.44 and 15,787.44

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Solution

The fourth proportional to 28,362.96, 39,142.44 and 15,787.44 is: 21,787.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.96 : 39,142.44 = 15,787.44 : x
  2. Step 2: Convert to fraction form
    28,362.96/39,142.44 = 15,787.44/x
  3. Step 3: Cross multiply
    28,362.96x = 39,142.44 × 15,787.44
  4. Step 4: Simplify right side
    28,362.96x = 617,958,922.95
  5. Step 5: Solve for x
    x = 617,958,922.95/28,362.96
  6. Step 6: Final answer
    x = 21,787.53

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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.