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Finding the Fourth Proportional to 18,220.75, 27,316.54 and 8,366.49

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Solution

The fourth proportional to 18,220.75, 27,316.54 and 8,366.49 is: 12,543.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.75 : 27,316.54 = 8,366.49 : x
  2. Step 2: Convert to fraction form
    18,220.75/27,316.54 = 8,366.49/x
  3. Step 3: Cross multiply
    18,220.75x = 27,316.54 × 8,366.49
  4. Step 4: Simplify right side
    18,220.75x = 228,543,569.20
  5. Step 5: Solve for x
    x = 228,543,569.20/18,220.75
  6. Step 6: Final answer
    x = 12,543.04

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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.