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Finding the Fourth Proportional to 18,478.46, 27,698.33 and 8,609.60

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Solution

The fourth proportional to 18,478.46, 27,698.33 and 8,609.60 is: 12,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.46 : 27,698.33 = 8,609.60 : x
  2. Step 2: Convert to fraction form
    18,478.46/27,698.33 = 8,609.60/x
  3. Step 3: Cross multiply
    18,478.46x = 27,698.33 × 8,609.60
  4. Step 4: Simplify right side
    18,478.46x = 238,471,541.97
  5. Step 5: Solve for x
    x = 238,471,541.97/18,478.46
  6. Step 6: Final answer
    x = 12,905.38

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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.