Home / 39,825.12-54,958.23-21,919.74

Finding the Fourth Proportional to 39,825.12, 54,958.23 and 21,919.74

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Solution

The fourth proportional to 39,825.12, 54,958.23 and 21,919.74 is: 30,249.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,825.12 : 54,958.23 = 21,919.74 : x
  2. Step 2: Convert to fraction form
    39,825.12/54,958.23 = 21,919.74/x
  3. Step 3: Cross multiply
    39,825.12x = 54,958.23 × 21,919.74
  4. Step 4: Simplify right side
    39,825.12x = 1,204,669,878.77
  5. Step 5: Solve for x
    x = 1,204,669,878.77/39,825.12
  6. Step 6: Final answer
    x = 30,249.00

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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.