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Finding the Fourth Proportional to 22,369.32, 33,391.17 and 20,747.88

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Solution

The fourth proportional to 22,369.32, 33,391.17 and 20,747.88 is: 30,970.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,369.32 : 33,391.17 = 20,747.88 : x
  2. Step 2: Convert to fraction form
    22,369.32/33,391.17 = 20,747.88/x
  3. Step 3: Cross multiply
    22,369.32x = 33,391.17 × 20,747.88
  4. Step 4: Simplify right side
    22,369.32x = 692,795,988.22
  5. Step 5: Solve for x
    x = 692,795,988.22/22,369.32
  6. Step 6: Final answer
    x = 30,970.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.