Home / 20,525.13-28,321.13-11,908.19

Finding the Fourth Proportional to 20,525.13, 28,321.13 and 11,908.19

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Solution

The fourth proportional to 20,525.13, 28,321.13 and 11,908.19 is: 16,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.13 : 28,321.13 = 11,908.19 : x
  2. Step 2: Convert to fraction form
    20,525.13/28,321.13 = 11,908.19/x
  3. Step 3: Cross multiply
    20,525.13x = 28,321.13 × 11,908.19
  4. Step 4: Simplify right side
    20,525.13x = 337,253,497.63
  5. Step 5: Solve for x
    x = 337,253,497.63/20,525.13
  6. Step 6: Final answer
    x = 16,431.25

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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.