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Finding the Fourth Proportional to 14,615.84, 20,172.49 and 8,244.38

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Solution

The fourth proportional to 14,615.84, 20,172.49 and 8,244.38 is: 11,378.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.84 : 20,172.49 = 8,244.38 : x
  2. Step 2: Convert to fraction form
    14,615.84/20,172.49 = 8,244.38/x
  3. Step 3: Cross multiply
    14,615.84x = 20,172.49 × 8,244.38
  4. Step 4: Simplify right side
    14,615.84x = 166,309,673.11
  5. Step 5: Solve for x
    x = 166,309,673.11/14,615.84
  6. Step 6: Final answer
    x = 11,378.73

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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.