Home / 11,459.39-17,189.10-3,139.48

Finding the Fourth Proportional to 11,459.39, 17,189.10 and 3,139.48

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Solution

The fourth proportional to 11,459.39, 17,189.10 and 3,139.48 is: 4,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459.39 : 17,189.10 = 3,139.48 : x
  2. Step 2: Convert to fraction form
    11,459.39/17,189.10 = 3,139.48/x
  3. Step 3: Cross multiply
    11,459.39x = 17,189.10 × 3,139.48
  4. Step 4: Simplify right side
    11,459.39x = 53,964,784.85
  5. Step 5: Solve for x
    x = 53,964,784.85/11,459.39
  6. Step 6: Final answer
    x = 4,709.22

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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.