Home / 39,648.82-54,716.12-21,742.76

Finding the Fourth Proportional to 39,648.82, 54,716.12 and 21,742.76

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Solution

The fourth proportional to 39,648.82, 54,716.12 and 21,742.76 is: 30,005.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,648.82 : 54,716.12 = 21,742.76 : x
  2. Step 2: Convert to fraction form
    39,648.82/54,716.12 = 21,742.76/x
  3. Step 3: Cross multiply
    39,648.82x = 54,716.12 × 21,742.76
  4. Step 4: Simplify right side
    39,648.82x = 1,189,679,246.07
  5. Step 5: Solve for x
    x = 1,189,679,246.07/39,648.82
  6. Step 6: Final answer
    x = 30,005.42

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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.