Home / 39,479.94-54,481.05-21,574.89

Finding the Fourth Proportional to 39,479.94, 54,481.05 and 21,574.89

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Solution

The fourth proportional to 39,479.94, 54,481.05 and 21,574.89 is: 29,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,479.94 : 54,481.05 = 21,574.89 : x
  2. Step 2: Convert to fraction form
    39,479.94/54,481.05 = 21,574.89/x
  3. Step 3: Cross multiply
    39,479.94x = 54,481.05 × 21,574.89
  4. Step 4: Simplify right side
    39,479.94x = 1,175,422,660.83
  5. Step 5: Solve for x
    x = 1,175,422,660.83/39,479.94
  6. Step 6: Final answer
    x = 29,772.66

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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.