Home / 11,724.11-17,589.20-8,640.84

Finding the Fourth Proportional to 11,724.11, 17,589.20 and 8,640.84

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Solution

The fourth proportional to 11,724.11, 17,589.20 and 8,640.84 is: 12,963.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.11 : 17,589.20 = 8,640.84 : x
  2. Step 2: Convert to fraction form
    11,724.11/17,589.20 = 8,640.84/x
  3. Step 3: Cross multiply
    11,724.11x = 17,589.20 × 8,640.84
  4. Step 4: Simplify right side
    11,724.11x = 151,985,462.93
  5. Step 5: Solve for x
    x = 151,985,462.93/11,724.11
  6. Step 6: Final answer
    x = 12,963.50

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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.