Home / 39,742.19-54,843.13-21,837.20

Finding the Fourth Proportional to 39,742.19, 54,843.13 and 21,837.20

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Solution

The fourth proportional to 39,742.19, 54,843.13 and 21,837.20 is: 30,134.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.19 : 54,843.13 = 21,837.20 : x
  2. Step 2: Convert to fraction form
    39,742.19/54,843.13 = 21,837.20/x
  3. Step 3: Cross multiply
    39,742.19x = 54,843.13 × 21,837.20
  4. Step 4: Simplify right side
    39,742.19x = 1,197,620,028.68
  5. Step 5: Solve for x
    x = 1,197,620,028.68/39,742.19
  6. Step 6: Final answer
    x = 30,134.72

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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.