Home / 12,635.99-18,954.89-3,869.76

Finding the Fourth Proportional to 12,635.99, 18,954.89 and 3,869.76

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Solution

The fourth proportional to 12,635.99, 18,954.89 and 3,869.76 is: 5,804.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.99 : 18,954.89 = 3,869.76 : x
  2. Step 2: Convert to fraction form
    12,635.99/18,954.89 = 3,869.76/x
  3. Step 3: Cross multiply
    12,635.99x = 18,954.89 × 3,869.76
  4. Step 4: Simplify right side
    12,635.99x = 73,350,855.78
  5. Step 5: Solve for x
    x = 73,350,855.78/12,635.99
  6. Step 6: Final answer
    x = 5,804.92

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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.