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Finding the Fourth Proportional to 12,273.70, 18,374.10 and 7,340.80

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Solution

The fourth proportional to 12,273.70, 18,374.10 and 7,340.80 is: 10,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,273.70 : 18,374.10 = 7,340.80 : x
  2. Step 2: Convert to fraction form
    12,273.70/18,374.10 = 7,340.80/x
  3. Step 3: Cross multiply
    12,273.70x = 18,374.10 × 7,340.80
  4. Step 4: Simplify right side
    12,273.70x = 134,880,593.28
  5. Step 5: Solve for x
    x = 134,880,593.28/12,273.70
  6. Step 6: Final answer
    x = 10,989.40

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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.