Home / 20,716.93-28,587.22-11,640.85

Finding the Fourth Proportional to 20,716.93, 28,587.22 and 11,640.85

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Solution

The fourth proportional to 20,716.93, 28,587.22 and 11,640.85 is: 16,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.93 : 28,587.22 = 11,640.85 : x
  2. Step 2: Convert to fraction form
    20,716.93/28,587.22 = 11,640.85/x
  3. Step 3: Cross multiply
    20,716.93x = 28,587.22 × 11,640.85
  4. Step 4: Simplify right side
    20,716.93x = 332,779,439.37
  5. Step 5: Solve for x
    x = 332,779,439.37/20,716.93
  6. Step 6: Final answer
    x = 16,063.17

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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.