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Finding the Fourth Proportional to 12,903.52, 17,786.16 and 8,704.48

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Solution

The fourth proportional to 12,903.52, 17,786.16 and 8,704.48 is: 11,998.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.52 : 17,786.16 = 8,704.48 : x
  2. Step 2: Convert to fraction form
    12,903.52/17,786.16 = 8,704.48/x
  3. Step 3: Cross multiply
    12,903.52x = 17,786.16 × 8,704.48
  4. Step 4: Simplify right side
    12,903.52x = 154,819,274.00
  5. Step 5: Solve for x
    x = 154,819,274.00/12,903.52
  6. Step 6: Final answer
    x = 11,998.22

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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.