Home / 21,425.68-29,563.24-11,865.10

Finding the Fourth Proportional to 21,425.68, 29,563.24 and 11,865.10

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Solution

The fourth proportional to 21,425.68, 29,563.24 and 11,865.10 is: 16,371.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.68 : 29,563.24 = 11,865.10 : x
  2. Step 2: Convert to fraction form
    21,425.68/29,563.24 = 11,865.10/x
  3. Step 3: Cross multiply
    21,425.68x = 29,563.24 × 11,865.10
  4. Step 4: Simplify right side
    21,425.68x = 350,770,739.66
  5. Step 5: Solve for x
    x = 350,770,739.66/21,425.68
  6. Step 6: Final answer
    x = 16,371.51

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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.