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Finding the Fourth Proportional to 12,127.21, 16,735.52 and 6,822.02

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Solution

The fourth proportional to 12,127.21, 16,735.52 and 6,822.02 is: 9,414.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.21 : 16,735.52 = 6,822.02 : x
  2. Step 2: Convert to fraction form
    12,127.21/16,735.52 = 6,822.02/x
  3. Step 3: Cross multiply
    12,127.21x = 16,735.52 × 6,822.02
  4. Step 4: Simplify right side
    12,127.21x = 114,170,111.04
  5. Step 5: Solve for x
    x = 114,170,111.04/12,127.21
  6. Step 6: Final answer
    x = 9,414.38

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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.