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Finding the Fourth Proportional to 22,455.87, 30,974.72 and 13,506.18

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Solution

The fourth proportional to 22,455.87, 30,974.72 and 13,506.18 is: 18,629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,455.87 : 30,974.72 = 13,506.18 : x
  2. Step 2: Convert to fraction form
    22,455.87/30,974.72 = 13,506.18/x
  3. Step 3: Cross multiply
    22,455.87x = 30,974.72 × 13,506.18
  4. Step 4: Simplify right side
    22,455.87x = 418,350,076.24
  5. Step 5: Solve for x
    x = 418,350,076.24/22,455.87
  6. Step 6: Final answer
    x = 18,629.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.