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Finding the Fourth Proportional to 22,168.49, 33,208.99 and 13,420.49

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Solution

The fourth proportional to 22,168.49, 33,208.99 and 13,420.49 is: 20,104.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,168.49 : 33,208.99 = 13,420.49 : x
  2. Step 2: Convert to fraction form
    22,168.49/33,208.99 = 13,420.49/x
  3. Step 3: Cross multiply
    22,168.49x = 33,208.99 × 13,420.49
  4. Step 4: Simplify right side
    22,168.49x = 445,680,718.61
  5. Step 5: Solve for x
    x = 445,680,718.61/22,168.49
  6. Step 6: Final answer
    x = 20,104.25

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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.