Home / 28,849.87-39,787.89-18,774.68

Finding the Fourth Proportional to 28,849.87, 39,787.89 and 18,774.68

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Solution

The fourth proportional to 28,849.87, 39,787.89 and 18,774.68 is: 25,892.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,849.87 : 39,787.89 = 18,774.68 : x
  2. Step 2: Convert to fraction form
    28,849.87/39,787.89 = 18,774.68/x
  3. Step 3: Cross multiply
    28,849.87x = 39,787.89 × 18,774.68
  4. Step 4: Simplify right side
    28,849.87x = 747,004,902.63
  5. Step 5: Solve for x
    x = 747,004,902.63/28,849.87
  6. Step 6: Final answer
    x = 25,892.84

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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.