Home / 20,881.44-28,816.36-11,450.24

Finding the Fourth Proportional to 20,881.44, 28,816.36 and 11,450.24

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Solution

The fourth proportional to 20,881.44, 28,816.36 and 11,450.24 is: 15,801.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.44 : 28,816.36 = 11,450.24 : x
  2. Step 2: Convert to fraction form
    20,881.44/28,816.36 = 11,450.24/x
  3. Step 3: Cross multiply
    20,881.44x = 28,816.36 × 11,450.24
  4. Step 4: Simplify right side
    20,881.44x = 329,954,237.93
  5. Step 5: Solve for x
    x = 329,954,237.93/20,881.44
  6. Step 6: Final answer
    x = 15,801.32

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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.