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Finding the Fourth Proportional to 18,224.61, 27,327.46 and 8,355.39

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Solution

The fourth proportional to 18,224.61, 27,327.46 and 8,355.39 is: 12,528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,224.61 : 27,327.46 = 8,355.39 : x
  2. Step 2: Convert to fraction form
    18,224.61/27,327.46 = 8,355.39/x
  3. Step 3: Cross multiply
    18,224.61x = 27,327.46 × 8,355.39
  4. Step 4: Simplify right side
    18,224.61x = 228,331,586.01
  5. Step 5: Solve for x
    x = 228,331,586.01/18,224.61
  6. Step 6: Final answer
    x = 12,528.75

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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.