Home / 11,138.50-16,690.16-4,108.84

Finding the Fourth Proportional to 11,138.50, 16,690.16 and 4,108.84

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Solution

The fourth proportional to 11,138.50, 16,690.16 and 4,108.84 is: 6,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.50 : 16,690.16 = 4,108.84 : x
  2. Step 2: Convert to fraction form
    11,138.50/16,690.16 = 4,108.84/x
  3. Step 3: Cross multiply
    11,138.50x = 16,690.16 × 4,108.84
  4. Step 4: Simplify right side
    11,138.50x = 68,577,165.56
  5. Step 5: Solve for x
    x = 68,577,165.56/11,138.50
  6. Step 6: Final answer
    x = 6,156.77

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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.