Home / 11,715.08-16,167.12-6,409.92

Finding the Fourth Proportional to 11,715.08, 16,167.12 and 6,409.92

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Solution

The fourth proportional to 11,715.08, 16,167.12 and 6,409.92 is: 8,845.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.08 : 16,167.12 = 6,409.92 : x
  2. Step 2: Convert to fraction form
    11,715.08/16,167.12 = 6,409.92/x
  3. Step 3: Cross multiply
    11,715.08x = 16,167.12 × 6,409.92
  4. Step 4: Simplify right side
    11,715.08x = 103,629,945.83
  5. Step 5: Solve for x
    x = 103,629,945.83/11,715.08
  6. Step 6: Final answer
    x = 8,845.86

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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.