Home / 11,465.69-15,821.33-6,429.92

Finding the Fourth Proportional to 11,465.69, 15,821.33 and 6,429.92

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Solution

The fourth proportional to 11,465.69, 15,821.33 and 6,429.92 is: 8,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,465.69 : 15,821.33 = 6,429.92 : x
  2. Step 2: Convert to fraction form
    11,465.69/15,821.33 = 6,429.92/x
  3. Step 3: Cross multiply
    11,465.69x = 15,821.33 × 6,429.92
  4. Step 4: Simplify right side
    11,465.69x = 101,729,774.94
  5. Step 5: Solve for x
    x = 101,729,774.94/11,465.69
  6. Step 6: Final answer
    x = 8,872.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.