Home / 20,929.86-31,394.52-6,896.34

Finding the Fourth Proportional to 20,929.86, 31,394.52 and 6,896.34

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Solution

The fourth proportional to 20,929.86, 31,394.52 and 6,896.34 is: 10,344.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.86 : 31,394.52 = 6,896.34 : x
  2. Step 2: Convert to fraction form
    20,929.86/31,394.52 = 6,896.34/x
  3. Step 3: Cross multiply
    20,929.86x = 31,394.52 × 6,896.34
  4. Step 4: Simplify right side
    20,929.86x = 216,507,284.06
  5. Step 5: Solve for x
    x = 216,507,284.06/20,929.86
  6. Step 6: Final answer
    x = 10,344.42

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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.