Home / 11,688.87-16,131.06-6,383.91

Finding the Fourth Proportional to 11,688.87, 16,131.06 and 6,383.91

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Solution

The fourth proportional to 11,688.87, 16,131.06 and 6,383.91 is: 8,810.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.87 : 16,131.06 = 6,383.91 : x
  2. Step 2: Convert to fraction form
    11,688.87/16,131.06 = 6,383.91/x
  3. Step 3: Cross multiply
    11,688.87x = 16,131.06 × 6,383.91
  4. Step 4: Simplify right side
    11,688.87x = 102,979,235.24
  5. Step 5: Solve for x
    x = 102,979,235.24/11,688.87
  6. Step 6: Final answer
    x = 8,810.02

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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.