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Finding the Fourth Proportional to 22,203.30, 30,640.80 and 12,132.03

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Solution

The fourth proportional to 22,203.30, 30,640.80 and 12,132.03 is: 16,742.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,203.30 : 30,640.80 = 12,132.03 : x
  2. Step 2: Convert to fraction form
    22,203.30/30,640.80 = 12,132.03/x
  3. Step 3: Cross multiply
    22,203.30x = 30,640.80 × 12,132.03
  4. Step 4: Simplify right side
    22,203.30x = 371,735,104.82
  5. Step 5: Solve for x
    x = 371,735,104.82/22,203.30
  6. Step 6: Final answer
    x = 16,742.34

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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.