Home / 12,621.10-18,933.48-3,854.87

Finding the Fourth Proportional to 12,621.10, 18,933.48 and 3,854.87

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Solution

The fourth proportional to 12,621.10, 18,933.48 and 3,854.87 is: 5,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.10 : 18,933.48 = 3,854.87 : x
  2. Step 2: Convert to fraction form
    12,621.10/18,933.48 = 3,854.87/x
  3. Step 3: Cross multiply
    12,621.10x = 18,933.48 × 3,854.87
  4. Step 4: Simplify right side
    12,621.10x = 72,986,151.38
  5. Step 5: Solve for x
    x = 72,986,151.38/12,621.10
  6. Step 6: Final answer
    x = 5,782.87

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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.