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Finding the Fourth Proportional to 39,448.87, 54,439.87 and 21,544.40

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Solution

The fourth proportional to 39,448.87, 54,439.87 and 21,544.40 is: 29,731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,448.87 : 54,439.87 = 21,544.40 : x
  2. Step 2: Convert to fraction form
    39,448.87/54,439.87 = 21,544.40/x
  3. Step 3: Cross multiply
    39,448.87x = 54,439.87 × 21,544.40
  4. Step 4: Simplify right side
    39,448.87x = 1,172,874,335.23
  5. Step 5: Solve for x
    x = 1,172,874,335.23/39,448.87
  6. Step 6: Final answer
    x = 29,731.51

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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.