Home / 20,758.09-28,645.77-11,326.72

Finding the Fourth Proportional to 20,758.09, 28,645.77 and 11,326.72

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Solution

The fourth proportional to 20,758.09, 28,645.77 and 11,326.72 is: 15,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.09 : 28,645.77 = 11,326.72 : x
  2. Step 2: Convert to fraction form
    20,758.09/28,645.77 = 11,326.72/x
  3. Step 3: Cross multiply
    20,758.09x = 28,645.77 × 11,326.72
  4. Step 4: Simplify right side
    20,758.09x = 324,462,615.97
  5. Step 5: Solve for x
    x = 324,462,615.97/20,758.09
  6. Step 6: Final answer
    x = 15,630.66

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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.