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Finding the Fourth Proportional to 18,824.09, 28,244.76 and 8,153.71

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Solution

The fourth proportional to 18,824.09, 28,244.76 and 8,153.71 is: 12,234.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,824.09 : 28,244.76 = 8,153.71 : x
  2. Step 2: Convert to fraction form
    18,824.09/28,244.76 = 8,153.71/x
  3. Step 3: Cross multiply
    18,824.09x = 28,244.76 × 8,153.71
  4. Step 4: Simplify right side
    18,824.09x = 230,299,541.29
  5. Step 5: Solve for x
    x = 230,299,541.29/18,824.09
  6. Step 6: Final answer
    x = 12,234.30

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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.