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Finding the Fourth Proportional to 22,420.64, 33,640.56 and 9,282.56

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Solution

The fourth proportional to 22,420.64, 33,640.56 and 9,282.56 is: 13,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.64 : 33,640.56 = 9,282.56 : x
  2. Step 2: Convert to fraction form
    22,420.64/33,640.56 = 9,282.56/x
  3. Step 3: Cross multiply
    22,420.64x = 33,640.56 × 9,282.56
  4. Step 4: Simplify right side
    22,420.64x = 312,270,516.63
  5. Step 5: Solve for x
    x = 312,270,516.63/22,420.64
  6. Step 6: Final answer
    x = 13,927.81

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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.