Home / 39,703.64-54,791.13-21,799.81

Finding the Fourth Proportional to 39,703.64, 54,791.13 and 21,799.81

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Solution

The fourth proportional to 39,703.64, 54,791.13 and 21,799.81 is: 30,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,703.64 : 54,791.13 = 21,799.81 : x
  2. Step 2: Convert to fraction form
    39,703.64/54,791.13 = 21,799.81/x
  3. Step 3: Cross multiply
    39,703.64x = 54,791.13 × 21,799.81
  4. Step 4: Simplify right side
    39,703.64x = 1,194,436,004.23
  5. Step 5: Solve for x
    x = 1,194,436,004.23/39,703.64
  6. Step 6: Final answer
    x = 30,083.79

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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.