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Finding the Fourth Proportional to 14,505, 20,020.52 and 8,912.76

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Solution

The fourth proportional to 14,505, 20,020.52 and 8,912.76 is: 12,301.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,505 : 20,020.52 = 8,912.76 : x
  2. Step 2: Convert to fraction form
    14,505/20,020.52 = 8,912.76/x
  3. Step 3: Cross multiply
    14,505x = 20,020.52 × 8,912.76
  4. Step 4: Simplify right side
    14,505x = 178,438,089.84
  5. Step 5: Solve for x
    x = 178,438,089.84/14,505
  6. Step 6: Final answer
    x = 12,301.83

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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.