Home / 14,586.45-20,129.09-8,212.56

Finding the Fourth Proportional to 14,586.45, 20,129.09 and 8,212.56

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Solution

The fourth proportional to 14,586.45, 20,129.09 and 8,212.56 is: 11,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,586.45 : 20,129.09 = 8,212.56 : x
  2. Step 2: Convert to fraction form
    14,586.45/20,129.09 = 8,212.56/x
  3. Step 3: Cross multiply
    14,586.45x = 20,129.09 × 8,212.56
  4. Step 4: Simplify right side
    14,586.45x = 165,311,318.31
  5. Step 5: Solve for x
    x = 165,311,318.31/14,586.45
  6. Step 6: Final answer
    x = 11,333.21

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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.