Home / 21,529.44-29,711.14-11,969.62

Finding the Fourth Proportional to 21,529.44, 29,711.14 and 11,969.62

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Solution

The fourth proportional to 21,529.44, 29,711.14 and 11,969.62 is: 16,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.44 : 29,711.14 = 11,969.62 : x
  2. Step 2: Convert to fraction form
    21,529.44/29,711.14 = 11,969.62/x
  3. Step 3: Cross multiply
    21,529.44x = 29,711.14 × 11,969.62
  4. Step 4: Simplify right side
    21,529.44x = 355,630,951.36
  5. Step 5: Solve for x
    x = 355,630,951.36/21,529.44
  6. Step 6: Final answer
    x = 16,518.36

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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.