Home / 21,107.46-29,129.79-11,675.82

Finding the Fourth Proportional to 21,107.46, 29,129.79 and 11,675.82

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Solution

The fourth proportional to 21,107.46, 29,129.79 and 11,675.82 is: 16,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.46 : 29,129.79 = 11,675.82 : x
  2. Step 2: Convert to fraction form
    21,107.46/29,129.79 = 11,675.82/x
  3. Step 3: Cross multiply
    21,107.46x = 29,129.79 × 11,675.82
  4. Step 4: Simplify right side
    21,107.46x = 340,114,184.68
  5. Step 5: Solve for x
    x = 340,114,184.68/21,107.46
  6. Step 6: Final answer
    x = 16,113.46

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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.