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Finding the Fourth Proportional to 33,765.89, 50,654.78 and 12,987.77

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Solution

The fourth proportional to 33,765.89, 50,654.78 and 12,987.77 is: 19,483.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,765.89 : 50,654.78 = 12,987.77 : x
  2. Step 2: Convert to fraction form
    33,765.89/50,654.78 = 12,987.77/x
  3. Step 3: Cross multiply
    33,765.89x = 50,654.78 × 12,987.77
  4. Step 4: Simplify right side
    33,765.89x = 657,892,567.10
  5. Step 5: Solve for x
    x = 657,892,567.10/33,765.89
  6. Step 6: Final answer
    x = 19,483.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.