Home / 39,695.83-54,780.03-21,791.14

Finding the Fourth Proportional to 39,695.83, 54,780.03 and 21,791.14

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Solution

The fourth proportional to 39,695.83, 54,780.03 and 21,791.14 is: 30,071.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,695.83 : 54,780.03 = 21,791.14 : x
  2. Step 2: Convert to fraction form
    39,695.83/54,780.03 = 21,791.14/x
  3. Step 3: Cross multiply
    39,695.83x = 54,780.03 × 21,791.14
  4. Step 4: Simplify right side
    39,695.83x = 1,193,719,302.93
  5. Step 5: Solve for x
    x = 1,193,719,302.93/39,695.83
  6. Step 6: Final answer
    x = 30,071.65

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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.