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Finding the Fourth Proportional to 16,203.60, 22,361.40 and 9,129.60

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Solution

The fourth proportional to 16,203.60, 22,361.40 and 9,129.60 is: 12,599.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,203.60 : 22,361.40 = 9,129.60 : x
  2. Step 2: Convert to fraction form
    16,203.60/22,361.40 = 9,129.60/x
  3. Step 3: Cross multiply
    16,203.60x = 22,361.40 × 9,129.60
  4. Step 4: Simplify right side
    16,203.60x = 204,150,637.44
  5. Step 5: Solve for x
    x = 204,150,637.44/16,203.60
  6. Step 6: Final answer
    x = 12,599.09

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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.