Home / 11,715.30-16,168.68-6,611.87

Finding the Fourth Proportional to 11,715.30, 16,168.68 and 6,611.87

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Solution

The fourth proportional to 11,715.30, 16,168.68 and 6,611.87 is: 9,125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.30 : 16,168.68 = 6,611.87 : x
  2. Step 2: Convert to fraction form
    11,715.30/16,168.68 = 6,611.87/x
  3. Step 3: Cross multiply
    11,715.30x = 16,168.68 × 6,611.87
  4. Step 4: Simplify right side
    11,715.30x = 106,905,250.65
  5. Step 5: Solve for x
    x = 106,905,250.65/11,715.30
  6. Step 6: Final answer
    x = 9,125.27

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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.