Home / 38,412.21-53,007.05-21,418.31

Finding the Fourth Proportional to 38,412.21, 53,007.05 and 21,418.31

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Solution

The fourth proportional to 38,412.21, 53,007.05 and 21,418.31 is: 29,556.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,412.21 : 53,007.05 = 21,418.31 : x
  2. Step 2: Convert to fraction form
    38,412.21/53,007.05 = 21,418.31/x
  3. Step 3: Cross multiply
    38,412.21x = 53,007.05 × 21,418.31
  4. Step 4: Simplify right side
    38,412.21x = 1,135,321,217.60
  5. Step 5: Solve for x
    x = 1,135,321,217.60/38,412.21
  6. Step 6: Final answer
    x = 29,556.26

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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.