Home / 20,906.88-28,851.96-11,475.48

Finding the Fourth Proportional to 20,906.88, 28,851.96 and 11,475.48

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Solution

The fourth proportional to 20,906.88, 28,851.96 and 11,475.48 is: 15,836.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.88 : 28,851.96 = 11,475.48 : x
  2. Step 2: Convert to fraction form
    20,906.88/28,851.96 = 11,475.48/x
  3. Step 3: Cross multiply
    20,906.88x = 28,851.96 × 11,475.48
  4. Step 4: Simplify right side
    20,906.88x = 331,090,089.94
  5. Step 5: Solve for x
    x = 331,090,089.94/20,906.88
  6. Step 6: Final answer
    x = 15,836.42

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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.