Home / 39,086.36-53,939.22-21,181.21

Finding the Fourth Proportional to 39,086.36, 53,939.22 and 21,181.21

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Solution

The fourth proportional to 39,086.36, 53,939.22 and 21,181.21 is: 29,230.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,086.36 : 53,939.22 = 21,181.21 : x
  2. Step 2: Convert to fraction form
    39,086.36/53,939.22 = 21,181.21/x
  3. Step 3: Cross multiply
    39,086.36x = 53,939.22 × 21,181.21
  4. Step 4: Simplify right side
    39,086.36x = 1,142,497,941.67
  5. Step 5: Solve for x
    x = 1,142,497,941.67/39,086.36
  6. Step 6: Final answer
    x = 29,230.09

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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.