Home / 21,309.14-29,406.74-12,361.97

Finding the Fourth Proportional to 21,309.14, 29,406.74 and 12,361.97

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Solution

The fourth proportional to 21,309.14, 29,406.74 and 12,361.97 is: 17,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.14 : 29,406.74 = 12,361.97 : x
  2. Step 2: Convert to fraction form
    21,309.14/29,406.74 = 12,361.97/x
  3. Step 3: Cross multiply
    21,309.14x = 29,406.74 × 12,361.97
  4. Step 4: Simplify right side
    21,309.14x = 363,525,028.83
  5. Step 5: Solve for x
    x = 363,525,028.83/21,309.14
  6. Step 6: Final answer
    x = 17,059.59

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1.5x scale

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.