Home / 11,688.91-16,131.35-6,384.22

Finding the Fourth Proportional to 11,688.91, 16,131.35 and 6,384.22

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Solution

The fourth proportional to 11,688.91, 16,131.35 and 6,384.22 is: 8,810.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.91 : 16,131.35 = 6,384.22 : x
  2. Step 2: Convert to fraction form
    11,688.91/16,131.35 = 6,384.22/x
  3. Step 3: Cross multiply
    11,688.91x = 16,131.35 × 6,384.22
  4. Step 4: Simplify right side
    11,688.91x = 102,986,087.30
  5. Step 5: Solve for x
    x = 102,986,087.30/11,688.91
  6. Step 6: Final answer
    x = 8,810.58

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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.