Home / 12,090.27-18,121.37-6,899.79

Finding the Fourth Proportional to 12,090.27, 18,121.37 and 6,899.79

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Solution

The fourth proportional to 12,090.27, 18,121.37 and 6,899.79 is: 10,341.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.27 : 18,121.37 = 6,899.79 : x
  2. Step 2: Convert to fraction form
    12,090.27/18,121.37 = 6,899.79/x
  3. Step 3: Cross multiply
    12,090.27x = 18,121.37 × 6,899.79
  4. Step 4: Simplify right side
    12,090.27x = 125,033,613.01
  5. Step 5: Solve for x
    x = 125,033,613.01/12,090.27
  6. Step 6: Final answer
    x = 10,341.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.