Home / 20,917.76-28,866.44-12,534.26

Finding the Fourth Proportional to 20,917.76, 28,866.44 and 12,534.26

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Solution

The fourth proportional to 20,917.76, 28,866.44 and 12,534.26 is: 17,297.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.76 : 28,866.44 = 12,534.26 : x
  2. Step 2: Convert to fraction form
    20,917.76/28,866.44 = 12,534.26/x
  3. Step 3: Cross multiply
    20,917.76x = 28,866.44 × 12,534.26
  4. Step 4: Simplify right side
    20,917.76x = 361,819,464.23
  5. Step 5: Solve for x
    x = 361,819,464.23/20,917.76
  6. Step 6: Final answer
    x = 17,297.24

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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.