Home / 20,645.54-28,499.56-13,940.24

Finding the Fourth Proportional to 20,645.54, 28,499.56 and 13,940.24

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Solution

The fourth proportional to 20,645.54, 28,499.56 and 13,940.24 is: 19,243.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.54 : 28,499.56 = 13,940.24 : x
  2. Step 2: Convert to fraction form
    20,645.54/28,499.56 = 13,940.24/x
  3. Step 3: Cross multiply
    20,645.54x = 28,499.56 × 13,940.24
  4. Step 4: Simplify right side
    20,645.54x = 397,290,742.69
  5. Step 5: Solve for x
    x = 397,290,742.69/20,645.54
  6. Step 6: Final answer
    x = 19,243.42

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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.