Home / 20,929.05-31,394.49-10,404.11

Finding the Fourth Proportional to 20,929.05, 31,394.49 and 10,404.11

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Solution

The fourth proportional to 20,929.05, 31,394.49 and 10,404.11 is: 15,606.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.05 : 31,394.49 = 10,404.11 : x
  2. Step 2: Convert to fraction form
    20,929.05/31,394.49 = 10,404.11/x
  3. Step 3: Cross multiply
    20,929.05x = 31,394.49 × 10,404.11
  4. Step 4: Simplify right side
    20,929.05x = 326,631,766.82
  5. Step 5: Solve for x
    x = 326,631,766.82/20,929.05
  6. Step 6: Final answer
    x = 15,606.62

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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.