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Finding the Fourth Proportional to 36,885.67, 50,902.09 and 20,970.12

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Solution

The fourth proportional to 36,885.67, 50,902.09 and 20,970.12 is: 28,938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,885.67 : 50,902.09 = 20,970.12 : x
  2. Step 2: Convert to fraction form
    36,885.67/50,902.09 = 20,970.12/x
  3. Step 3: Cross multiply
    36,885.67x = 50,902.09 × 20,970.12
  4. Step 4: Simplify right side
    36,885.67x = 1,067,422,935.55
  5. Step 5: Solve for x
    x = 1,067,422,935.55/36,885.67
  6. Step 6: Final answer
    x = 28,938.69

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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.