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Finding the Fourth Proportional to 36,987.88, 51,044.88 and 20,860.60

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Solution

The fourth proportional to 36,987.88, 51,044.88 and 20,860.60 is: 28,788.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,987.88 : 51,044.88 = 20,860.60 : x
  2. Step 2: Convert to fraction form
    36,987.88/51,044.88 = 20,860.60/x
  3. Step 3: Cross multiply
    36,987.88x = 51,044.88 × 20,860.60
  4. Step 4: Simplify right side
    36,987.88x = 1,064,826,823.73
  5. Step 5: Solve for x
    x = 1,064,826,823.73/36,987.88
  6. Step 6: Final answer
    x = 28,788.53

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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.