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Finding the Fourth Proportional to 11,903.12, 17,855.08 and 5,659.92

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Solution

The fourth proportional to 11,903.12, 17,855.08 and 5,659.92 is: 8,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,903.12 : 17,855.08 = 5,659.92 : x
  2. Step 2: Convert to fraction form
    11,903.12/17,855.08 = 5,659.92/x
  3. Step 3: Cross multiply
    11,903.12x = 17,855.08 × 5,659.92
  4. Step 4: Simplify right side
    11,903.12x = 101,058,324.39
  5. Step 5: Solve for x
    x = 101,058,324.39/11,903.12
  6. Step 6: Final answer
    x = 8,490.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.