Home / 20,709.36-28,578.96-11,277.96

Finding the Fourth Proportional to 20,709.36, 28,578.96 and 11,277.96

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Solution

The fourth proportional to 20,709.36, 28,578.96 and 11,277.96 is: 15,563.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.36 : 28,578.96 = 11,277.96 : x
  2. Step 2: Convert to fraction form
    20,709.36/28,578.96 = 11,277.96/x
  3. Step 3: Cross multiply
    20,709.36x = 28,578.96 × 11,277.96
  4. Step 4: Simplify right side
    20,709.36x = 322,312,367.72
  5. Step 5: Solve for x
    x = 322,312,367.72/20,709.36
  6. Step 6: Final answer
    x = 15,563.61

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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.