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Finding the Fourth Proportional to 36,987.25, 51,042.41 and 20,220.25

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Solution

The fourth proportional to 36,987.25, 51,042.41 and 20,220.25 is: 27,903.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,987.25 : 51,042.41 = 20,220.25 : x
  2. Step 2: Convert to fraction form
    36,987.25/51,042.41 = 20,220.25/x
  3. Step 3: Cross multiply
    36,987.25x = 51,042.41 × 20,220.25
  4. Step 4: Simplify right side
    36,987.25x = 1,032,090,290.80
  5. Step 5: Solve for x
    x = 1,032,090,290.80/36,987.25
  6. Step 6: Final answer
    x = 27,903.95

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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.