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Finding the Fourth Proportional to 18,374.60, 27,566.40 and 8,511.80

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Solution

The fourth proportional to 18,374.60, 27,566.40 and 8,511.80 is: 12,769.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.60 : 27,566.40 = 8,511.80 : x
  2. Step 2: Convert to fraction form
    18,374.60/27,566.40 = 8,511.80/x
  3. Step 3: Cross multiply
    18,374.60x = 27,566.40 × 8,511.80
  4. Step 4: Simplify right side
    18,374.60x = 234,639,683.52
  5. Step 5: Solve for x
    x = 234,639,683.52/18,374.60
  6. Step 6: Final answer
    x = 12,769.78

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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.