Home / 9,118.62-13,660.08-8,126.84

Finding the Fourth Proportional to 9,118.62, 13,660.08 and 8,126.84

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Solution

The fourth proportional to 9,118.62, 13,660.08 and 8,126.84 is: 12,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.62 : 13,660.08 = 8,126.84 : x
  2. Step 2: Convert to fraction form
    9,118.62/13,660.08 = 8,126.84/x
  3. Step 3: Cross multiply
    9,118.62x = 13,660.08 × 8,126.84
  4. Step 4: Simplify right side
    9,118.62x = 111,013,288.22
  5. Step 5: Solve for x
    x = 111,013,288.22/9,118.62
  6. Step 6: Final answer
    x = 12,174.35

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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.