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Finding the Fourth Proportional to 12,362.70, 18,544.05 and 11,109.90

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Solution

The fourth proportional to 12,362.70, 18,544.05 and 11,109.90 is: 16,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,362.70 : 18,544.05 = 11,109.90 : x
  2. Step 2: Convert to fraction form
    12,362.70/18,544.05 = 11,109.90/x
  3. Step 3: Cross multiply
    12,362.70x = 18,544.05 × 11,109.90
  4. Step 4: Simplify right side
    12,362.70x = 206,022,541.10
  5. Step 5: Solve for x
    x = 206,022,541.10/12,362.70
  6. Step 6: Final answer
    x = 16,664.85

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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.