Home / 39,118.10-53,982.68-21,213.14

Finding the Fourth Proportional to 39,118.10, 53,982.68 and 21,213.14

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Solution

The fourth proportional to 39,118.10, 53,982.68 and 21,213.14 is: 29,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,118.10 : 53,982.68 = 21,213.14 : x
  2. Step 2: Convert to fraction form
    39,118.10/53,982.68 = 21,213.14/x
  3. Step 3: Cross multiply
    39,118.10x = 53,982.68 × 21,213.14
  4. Step 4: Simplify right side
    39,118.10x = 1,145,141,772.44
  5. Step 5: Solve for x
    x = 1,145,141,772.44/39,118.10
  6. Step 6: Final answer
    x = 29,273.97

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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.