Home / 11,138.10-16,708.28-4,119.99

Finding the Fourth Proportional to 11,138.10, 16,708.28 and 4,119.99

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Solution

The fourth proportional to 11,138.10, 16,708.28 and 4,119.99 is: 6,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.10 : 16,708.28 = 4,119.99 : x
  2. Step 2: Convert to fraction form
    11,138.10/16,708.28 = 4,119.99/x
  3. Step 3: Cross multiply
    11,138.10x = 16,708.28 × 4,119.99
  4. Step 4: Simplify right side
    11,138.10x = 68,837,925.92
  5. Step 5: Solve for x
    x = 68,837,925.92/11,138.10
  6. Step 6: Final answer
    x = 6,180.40

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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.