Home / 11,690.55-16,132.92-6,385.37

Finding the Fourth Proportional to 11,690.55, 16,132.92 and 6,385.37

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Solution

The fourth proportional to 11,690.55, 16,132.92 and 6,385.37 is: 8,811.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.55 : 16,132.92 = 6,385.37 : x
  2. Step 2: Convert to fraction form
    11,690.55/16,132.92 = 6,385.37/x
  3. Step 3: Cross multiply
    11,690.55x = 16,132.92 × 6,385.37
  4. Step 4: Simplify right side
    11,690.55x = 103,014,582.72
  5. Step 5: Solve for x
    x = 103,014,582.72/11,690.55
  6. Step 6: Final answer
    x = 8,811.78

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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.