Home / 11,929.11-17,890.66-4,911.09

Finding the Fourth Proportional to 11,929.11, 17,890.66 and 4,911.09

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Solution

The fourth proportional to 11,929.11, 17,890.66 and 4,911.09 is: 7,365.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.11 : 17,890.66 = 4,911.09 : x
  2. Step 2: Convert to fraction form
    11,929.11/17,890.66 = 4,911.09/x
  3. Step 3: Cross multiply
    11,929.11x = 17,890.66 × 4,911.09
  4. Step 4: Simplify right side
    11,929.11x = 87,862,641.42
  5. Step 5: Solve for x
    x = 87,862,641.42/11,929.11
  6. Step 6: Final answer
    x = 7,365.40

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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.