Home / 39,653.91-54,721.71-21,749.04

Finding the Fourth Proportional to 39,653.91, 54,721.71 and 21,749.04

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Solution

The fourth proportional to 39,653.91, 54,721.71 and 21,749.04 is: 30,013.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,653.91 : 54,721.71 = 21,749.04 : x
  2. Step 2: Convert to fraction form
    39,653.91/54,721.71 = 21,749.04/x
  3. Step 3: Cross multiply
    39,653.91x = 54,721.71 × 21,749.04
  4. Step 4: Simplify right side
    39,653.91x = 1,190,144,659.66
  5. Step 5: Solve for x
    x = 1,190,144,659.66/39,653.91
  6. Step 6: Final answer
    x = 30,013.30

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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.