Home / 20,757.86-28,646.16-11,326.41

Finding the Fourth Proportional to 20,757.86, 28,646.16 and 11,326.41

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Solution

The fourth proportional to 20,757.86, 28,646.16 and 11,326.41 is: 15,630.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.86 : 28,646.16 = 11,326.41 : x
  2. Step 2: Convert to fraction form
    20,757.86/28,646.16 = 11,326.41/x
  3. Step 3: Cross multiply
    20,757.86x = 28,646.16 × 11,326.41
  4. Step 4: Simplify right side
    20,757.86x = 324,458,153.09
  5. Step 5: Solve for x
    x = 324,458,153.09/20,757.86
  6. Step 6: Final answer
    x = 15,630.62

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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.