Home / 28,476.38-39,297.48-15,729.33

Finding the Fourth Proportional to 28,476.38, 39,297.48 and 15,729.33

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Solution

The fourth proportional to 28,476.38, 39,297.48 and 15,729.33 is: 21,706.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.38 : 39,297.48 = 15,729.33 : x
  2. Step 2: Convert to fraction form
    28,476.38/39,297.48 = 15,729.33/x
  3. Step 3: Cross multiply
    28,476.38x = 39,297.48 × 15,729.33
  4. Step 4: Simplify right side
    28,476.38x = 618,122,952.44
  5. Step 5: Solve for x
    x = 618,122,952.44/28,476.38
  6. Step 6: Final answer
    x = 21,706.52

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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.