Home / 18,787.85-25,914.76-12,081.96

Finding the Fourth Proportional to 18,787.85, 25,914.76 and 12,081.96

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Solution

The fourth proportional to 18,787.85, 25,914.76 and 12,081.96 is: 16,665.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.85 : 25,914.76 = 12,081.96 : x
  2. Step 2: Convert to fraction form
    18,787.85/25,914.76 = 12,081.96/x
  3. Step 3: Cross multiply
    18,787.85x = 25,914.76 × 12,081.96
  4. Step 4: Simplify right side
    18,787.85x = 313,101,063.52
  5. Step 5: Solve for x
    x = 313,101,063.52/18,787.85
  6. Step 6: Final answer
    x = 16,665.08

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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.