Home / 11,715.61-16,167.40-6,679.67

Finding the Fourth Proportional to 11,715.61, 16,167.40 and 6,679.67

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Solution

The fourth proportional to 11,715.61, 16,167.40 and 6,679.67 is: 9,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.61 : 16,167.40 = 6,679.67 : x
  2. Step 2: Convert to fraction form
    11,715.61/16,167.40 = 6,679.67/x
  3. Step 3: Cross multiply
    11,715.61x = 16,167.40 × 6,679.67
  4. Step 4: Simplify right side
    11,715.61x = 107,992,896.76
  5. Step 5: Solve for x
    x = 107,992,896.76/11,715.61
  6. Step 6: Final answer
    x = 9,217.86

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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.