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Finding the Fourth Proportional to 18,608.60, 27,865.96 and 12,349.60

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Solution

The fourth proportional to 18,608.60, 27,865.96 and 12,349.60 is: 18,493.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.60 : 27,865.96 = 12,349.60 : x
  2. Step 2: Convert to fraction form
    18,608.60/27,865.96 = 12,349.60/x
  3. Step 3: Cross multiply
    18,608.60x = 27,865.96 × 12,349.60
  4. Step 4: Simplify right side
    18,608.60x = 344,133,459.62
  5. Step 5: Solve for x
    x = 344,133,459.62/18,608.60
  6. Step 6: Final answer
    x = 18,493.25

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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.