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Finding the Fourth Proportional to 16,009.40, 22,090.92 and 8,936.12

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Solution

The fourth proportional to 16,009.40, 22,090.92 and 8,936.12 is: 12,330.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,009.40 : 22,090.92 = 8,936.12 : x
  2. Step 2: Convert to fraction form
    16,009.40/22,090.92 = 8,936.12/x
  3. Step 3: Cross multiply
    16,009.40x = 22,090.92 × 8,936.12
  4. Step 4: Simplify right side
    16,009.40x = 197,407,001.58
  5. Step 5: Solve for x
    x = 197,407,001.58/16,009.40
  6. Step 6: Final answer
    x = 12,330.70

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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.