Home / 11,656.81-16,086.37-6,620.79

Finding the Fourth Proportional to 11,656.81, 16,086.37 and 6,620.79

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Solution

The fourth proportional to 11,656.81, 16,086.37 and 6,620.79 is: 9,136.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,656.81 : 16,086.37 = 6,620.79 : x
  2. Step 2: Convert to fraction form
    11,656.81/16,086.37 = 6,620.79/x
  3. Step 3: Cross multiply
    11,656.81x = 16,086.37 × 6,620.79
  4. Step 4: Simplify right side
    11,656.81x = 106,504,461.95
  5. Step 5: Solve for x
    x = 106,504,461.95/11,656.81
  6. Step 6: Final answer
    x = 9,136.67

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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.