Home / 39,005.79-53,827.94-21,100.75

Finding the Fourth Proportional to 39,005.79, 53,827.94 and 21,100.75

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Solution

The fourth proportional to 39,005.79, 53,827.94 and 21,100.75 is: 29,119.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,005.79 : 53,827.94 = 21,100.75 : x
  2. Step 2: Convert to fraction form
    39,005.79/53,827.94 = 21,100.75/x
  3. Step 3: Cross multiply
    39,005.79x = 53,827.94 × 21,100.75
  4. Step 4: Simplify right side
    39,005.79x = 1,135,809,904.96
  5. Step 5: Solve for x
    x = 1,135,809,904.96/39,005.79
  6. Step 6: Final answer
    x = 29,119.01

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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.