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Finding the Fourth Proportional to 11,508.16, 17,235.84 and 7,118.08

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Solution

The fourth proportional to 11,508.16, 17,235.84 and 7,118.08 is: 10,660.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.16 : 17,235.84 = 7,118.08 : x
  2. Step 2: Convert to fraction form
    11,508.16/17,235.84 = 7,118.08/x
  3. Step 3: Cross multiply
    11,508.16x = 17,235.84 × 7,118.08
  4. Step 4: Simplify right side
    11,508.16x = 122,686,087.99
  5. Step 5: Solve for x
    x = 122,686,087.99/11,508.16
  6. Step 6: Final answer
    x = 10,660.79

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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.