Home / 39,005.25-53,827.38-21,100.34

Finding the Fourth Proportional to 39,005.25, 53,827.38 and 21,100.34

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Solution

The fourth proportional to 39,005.25, 53,827.38 and 21,100.34 is: 29,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,005.25 : 53,827.38 = 21,100.34 : x
  2. Step 2: Convert to fraction form
    39,005.25/53,827.38 = 21,100.34/x
  3. Step 3: Cross multiply
    39,005.25x = 53,827.38 × 21,100.34
  4. Step 4: Simplify right side
    39,005.25x = 1,135,775,750.17
  5. Step 5: Solve for x
    x = 1,135,775,750.17/39,005.25
  6. Step 6: Final answer
    x = 29,118.54

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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.