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Finding the Fourth Proportional to 13,233.80, 19,812.30 and 12,849.80

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Solution

The fourth proportional to 13,233.80, 19,812.30 and 12,849.80 is: 19,237.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,233.80 : 19,812.30 = 12,849.80 : x
  2. Step 2: Convert to fraction form
    13,233.80/19,812.30 = 12,849.80/x
  3. Step 3: Cross multiply
    13,233.80x = 19,812.30 × 12,849.80
  4. Step 4: Simplify right side
    13,233.80x = 254,584,092.54
  5. Step 5: Solve for x
    x = 254,584,092.54/13,233.80
  6. Step 6: Final answer
    x = 19,237.41

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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.