Home / 18,707.75-28,060.85-8,709.06

Finding the Fourth Proportional to 18,707.75, 28,060.85 and 8,709.06

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Solution

The fourth proportional to 18,707.75, 28,060.85 and 8,709.06 is: 13,063.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.75 : 28,060.85 = 8,709.06 : x
  2. Step 2: Convert to fraction form
    18,707.75/28,060.85 = 8,709.06/x
  3. Step 3: Cross multiply
    18,707.75x = 28,060.85 × 8,709.06
  4. Step 4: Simplify right side
    18,707.75x = 244,383,753.30
  5. Step 5: Solve for x
    x = 244,383,753.30/18,707.75
  6. Step 6: Final answer
    x = 13,063.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.