Home / 21,396.87-29,527.76-11,965.41

Finding the Fourth Proportional to 21,396.87, 29,527.76 and 11,965.41

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Solution

The fourth proportional to 21,396.87, 29,527.76 and 11,965.41 is: 16,512.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.87 : 29,527.76 = 11,965.41 : x
  2. Step 2: Convert to fraction form
    21,396.87/29,527.76 = 11,965.41/x
  3. Step 3: Cross multiply
    21,396.87x = 29,527.76 × 11,965.41
  4. Step 4: Simplify right side
    21,396.87x = 353,311,784.70
  5. Step 5: Solve for x
    x = 353,311,784.70/21,396.87
  6. Step 6: Final answer
    x = 16,512.31

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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.