Home / 20,529.42-28,326.94-11,912.44

Finding the Fourth Proportional to 20,529.42, 28,326.94 and 11,912.44

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Solution

The fourth proportional to 20,529.42, 28,326.94 and 11,912.44 is: 16,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.42 : 28,326.94 = 11,912.44 : x
  2. Step 2: Convert to fraction form
    20,529.42/28,326.94 = 11,912.44/x
  3. Step 3: Cross multiply
    20,529.42x = 28,326.94 × 11,912.44
  4. Step 4: Simplify right side
    20,529.42x = 337,442,973.13
  5. Step 5: Solve for x
    x = 337,442,973.13/20,529.42
  6. Step 6: Final answer
    x = 16,437.04

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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.