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Finding the Fourth Proportional to 12,259.42, 16,912.92 and 8,009.02

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Solution

The fourth proportional to 12,259.42, 16,912.92 and 8,009.02 is: 11,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259.42 : 16,912.92 = 8,009.02 : x
  2. Step 2: Convert to fraction form
    12,259.42/16,912.92 = 8,009.02/x
  3. Step 3: Cross multiply
    12,259.42x = 16,912.92 × 8,009.02
  4. Step 4: Simplify right side
    12,259.42x = 135,455,914.54
  5. Step 5: Solve for x
    x = 135,455,914.54/12,259.42
  6. Step 6: Final answer
    x = 11,049.13

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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.