Home / 11,089.88-16,639.38-8,143.37

Finding the Fourth Proportional to 11,089.88, 16,639.38 and 8,143.37

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Solution

The fourth proportional to 11,089.88, 16,639.38 and 8,143.37 is: 12,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,089.88 : 16,639.38 = 8,143.37 : x
  2. Step 2: Convert to fraction form
    11,089.88/16,639.38 = 8,143.37/x
  3. Step 3: Cross multiply
    11,089.88x = 16,639.38 × 8,143.37
  4. Step 4: Simplify right side
    11,089.88x = 135,500,544.71
  5. Step 5: Solve for x
    x = 135,500,544.71/11,089.88
  6. Step 6: Final answer
    x = 12,218.40

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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.