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Finding the Fourth Proportional to 39,992.56, 59,902.57 and 18,900.77

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Solution

The fourth proportional to 39,992.56, 59,902.57 and 18,900.77 is: 28,310.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,992.56 : 59,902.57 = 18,900.77 : x
  2. Step 2: Convert to fraction form
    39,992.56/59,902.57 = 18,900.77/x
  3. Step 3: Cross multiply
    39,992.56x = 59,902.57 × 18,900.77
  4. Step 4: Simplify right side
    39,992.56x = 1,132,204,697.98
  5. Step 5: Solve for x
    x = 1,132,204,697.98/39,992.56
  6. Step 6: Final answer
    x = 28,310.38

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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.