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Finding the Fourth Proportional to 12,350.40, 18,545.40 and 11,440.80

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Solution

The fourth proportional to 12,350.40, 18,545.40 and 11,440.80 is: 17,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,350.40 : 18,545.40 = 11,440.80 : x
  2. Step 2: Convert to fraction form
    12,350.40/18,545.40 = 11,440.80/x
  3. Step 3: Cross multiply
    12,350.40x = 18,545.40 × 11,440.80
  4. Step 4: Simplify right side
    12,350.40x = 212,174,212.32
  5. Step 5: Solve for x
    x = 212,174,212.32/12,350.40
  6. Step 6: Final answer
    x = 17,179.54

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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.