Home / 20,948.42-28,914.27-13,872.26

Finding the Fourth Proportional to 20,948.42, 28,914.27 and 13,872.26

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Solution

The fourth proportional to 20,948.42, 28,914.27 and 13,872.26 is: 19,147.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.42 : 28,914.27 = 13,872.26 : x
  2. Step 2: Convert to fraction form
    20,948.42/28,914.27 = 13,872.26/x
  3. Step 3: Cross multiply
    20,948.42x = 28,914.27 × 13,872.26
  4. Step 4: Simplify right side
    20,948.42x = 401,106,291.41
  5. Step 5: Solve for x
    x = 401,106,291.41/20,948.42
  6. Step 6: Final answer
    x = 19,147.33

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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.