Home / 39,742.83-54,846.36-21,839.13

Finding the Fourth Proportional to 39,742.83, 54,846.36 and 21,839.13

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Solution

The fourth proportional to 39,742.83, 54,846.36 and 21,839.13 is: 30,138.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.83 : 54,846.36 = 21,839.13 : x
  2. Step 2: Convert to fraction form
    39,742.83/54,846.36 = 21,839.13/x
  3. Step 3: Cross multiply
    39,742.83x = 54,846.36 × 21,839.13
  4. Step 4: Simplify right side
    39,742.83x = 1,197,796,786.07
  5. Step 5: Solve for x
    x = 1,197,796,786.07/39,742.83
  6. Step 6: Final answer
    x = 30,138.69

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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.