Home / 39,441.78-54,431.87-21,538.45

Finding the Fourth Proportional to 39,441.78, 54,431.87 and 21,538.45

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Solution

The fourth proportional to 39,441.78, 54,431.87 and 21,538.45 is: 29,724.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,441.78 : 54,431.87 = 21,538.45 : x
  2. Step 2: Convert to fraction form
    39,441.78/54,431.87 = 21,538.45/x
  3. Step 3: Cross multiply
    39,441.78x = 54,431.87 × 21,538.45
  4. Step 4: Simplify right side
    39,441.78x = 1,172,378,110.40
  5. Step 5: Solve for x
    x = 1,172,378,110.40/39,441.78
  6. Step 6: Final answer
    x = 29,724.27

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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.