Home / 39,480.09-54,480.23-21,575.25

Finding the Fourth Proportional to 39,480.09, 54,480.23 and 21,575.25

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Solution

The fourth proportional to 39,480.09, 54,480.23 and 21,575.25 is: 29,772.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,480.09 : 54,480.23 = 21,575.25 : x
  2. Step 2: Convert to fraction form
    39,480.09/54,480.23 = 21,575.25/x
  3. Step 3: Cross multiply
    39,480.09x = 54,480.23 × 21,575.25
  4. Step 4: Simplify right side
    39,480.09x = 1,175,424,474.43
  5. Step 5: Solve for x
    x = 1,175,424,474.43/39,480.09
  6. Step 6: Final answer
    x = 29,772.59

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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.