Home / 11,616.88-16,031.36-6,311.80

Finding the Fourth Proportional to 11,616.88, 16,031.36 and 6,311.80

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Solution

The fourth proportional to 11,616.88, 16,031.36 and 6,311.80 is: 8,710.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,616.88 : 16,031.36 = 6,311.80 : x
  2. Step 2: Convert to fraction form
    11,616.88/16,031.36 = 6,311.80/x
  3. Step 3: Cross multiply
    11,616.88x = 16,031.36 × 6,311.80
  4. Step 4: Simplify right side
    11,616.88x = 101,186,738.05
  5. Step 5: Solve for x
    x = 101,186,738.05/11,616.88
  6. Step 6: Final answer
    x = 8,710.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.