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Finding the Fourth Proportional to 14,504.54, 20,014.49 and 8,129.67

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Solution

The fourth proportional to 14,504.54, 20,014.49 and 8,129.67 is: 11,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,504.54 : 20,014.49 = 8,129.67 : x
  2. Step 2: Convert to fraction form
    14,504.54/20,014.49 = 8,129.67/x
  3. Step 3: Cross multiply
    14,504.54x = 20,014.49 × 8,129.67
  4. Step 4: Simplify right side
    14,504.54x = 162,711,144.19
  5. Step 5: Solve for x
    x = 162,711,144.19/14,504.54
  6. Step 6: Final answer
    x = 11,217.94

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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.