Home / 39,027.83-53,858.12-21,122.42

Finding the Fourth Proportional to 39,027.83, 53,858.12 and 21,122.42

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Solution

The fourth proportional to 39,027.83, 53,858.12 and 21,122.42 is: 29,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,027.83 : 53,858.12 = 21,122.42 : x
  2. Step 2: Convert to fraction form
    39,027.83/53,858.12 = 21,122.42/x
  3. Step 3: Cross multiply
    39,027.83x = 53,858.12 × 21,122.42
  4. Step 4: Simplify right side
    39,027.83x = 1,137,613,456.15
  5. Step 5: Solve for x
    x = 1,137,613,456.15/39,027.83
  6. Step 6: Final answer
    x = 29,148.78

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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.