Home / 20,585.97-28,408.86-11,633.58

Finding the Fourth Proportional to 20,585.97, 28,408.86 and 11,633.58

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Solution

The fourth proportional to 20,585.97, 28,408.86 and 11,633.58 is: 16,054.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.97 : 28,408.86 = 11,633.58 : x
  2. Step 2: Convert to fraction form
    20,585.97/28,408.86 = 11,633.58/x
  3. Step 3: Cross multiply
    20,585.97x = 28,408.86 × 11,633.58
  4. Step 4: Simplify right side
    20,585.97x = 330,496,745.52
  5. Step 5: Solve for x
    x = 330,496,745.52/20,585.97
  6. Step 6: Final answer
    x = 16,054.47

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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.