Home / 11,926.60-17,890.90-3,161.40

Finding the Fourth Proportional to 11,926.60, 17,890.90 and 3,161.40

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Solution

The fourth proportional to 11,926.60, 17,890.90 and 3,161.40 is: 4,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,926.60 : 17,890.90 = 3,161.40 : x
  2. Step 2: Convert to fraction form
    11,926.60/17,890.90 = 3,161.40/x
  3. Step 3: Cross multiply
    11,926.60x = 17,890.90 × 3,161.40
  4. Step 4: Simplify right side
    11,926.60x = 56,560,291.26
  5. Step 5: Solve for x
    x = 56,560,291.26/11,926.60
  6. Step 6: Final answer
    x = 4,742.37

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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.