Home / 20,900.12-28,843.44-13,814.24

Finding the Fourth Proportional to 20,900.12, 28,843.44 and 13,814.24

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Solution

The fourth proportional to 20,900.12, 28,843.44 and 13,814.24 is: 19,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.12 : 28,843.44 = 13,814.24 : x
  2. Step 2: Convert to fraction form
    20,900.12/28,843.44 = 13,814.24/x
  3. Step 3: Cross multiply
    20,900.12x = 28,843.44 × 13,814.24
  4. Step 4: Simplify right side
    20,900.12x = 398,450,202.59
  5. Step 5: Solve for x
    x = 398,450,202.59/20,900.12
  6. Step 6: Final answer
    x = 19,064.49

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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.