Home / 39,788.20-59,682.30-12,082.60

Finding the Fourth Proportional to 39,788.20, 59,682.30 and 12,082.60

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Solution

The fourth proportional to 39,788.20, 59,682.30 and 12,082.60 is: 18,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,788.20 : 59,682.30 = 12,082.60 : x
  2. Step 2: Convert to fraction form
    39,788.20/59,682.30 = 12,082.60/x
  3. Step 3: Cross multiply
    39,788.20x = 59,682.30 × 12,082.60
  4. Step 4: Simplify right side
    39,788.20x = 721,117,357.98
  5. Step 5: Solve for x
    x = 721,117,357.98/39,788.20
  6. Step 6: Final answer
    x = 18,123.90

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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.