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Finding the Fourth Proportional to 22,280.64, 30,744.37 and 13,324.88

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Solution

The fourth proportional to 22,280.64, 30,744.37 and 13,324.88 is: 18,386.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.64 : 30,744.37 = 13,324.88 : x
  2. Step 2: Convert to fraction form
    22,280.64/30,744.37 = 13,324.88/x
  3. Step 3: Cross multiply
    22,280.64x = 30,744.37 × 13,324.88
  4. Step 4: Simplify right side
    22,280.64x = 409,664,820.58
  5. Step 5: Solve for x
    x = 409,664,820.58/22,280.64
  6. Step 6: Final answer
    x = 18,386.58

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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.