Home / 21,343.56-29,455.26-11,912.04

Finding the Fourth Proportional to 21,343.56, 29,455.26 and 11,912.04

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Solution

The fourth proportional to 21,343.56, 29,455.26 and 11,912.04 is: 16,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.56 : 29,455.26 = 11,912.04 : x
  2. Step 2: Convert to fraction form
    21,343.56/29,455.26 = 11,912.04/x
  3. Step 3: Cross multiply
    21,343.56x = 29,455.26 × 11,912.04
  4. Step 4: Simplify right side
    21,343.56x = 350,872,235.33
  5. Step 5: Solve for x
    x = 350,872,235.33/21,343.56
  6. Step 6: Final answer
    x = 16,439.26

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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.