Home / 18,216.20-25,140.21-11,147.30

Finding the Fourth Proportional to 18,216.20, 25,140.21 and 11,147.30

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Solution

The fourth proportional to 18,216.20, 25,140.21 and 11,147.30 is: 15,384.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.20 : 25,140.21 = 11,147.30 : x
  2. Step 2: Convert to fraction form
    18,216.20/25,140.21 = 11,147.30/x
  3. Step 3: Cross multiply
    18,216.20x = 25,140.21 × 11,147.30
  4. Step 4: Simplify right side
    18,216.20x = 280,245,462.93
  5. Step 5: Solve for x
    x = 280,245,462.93/18,216.20
  6. Step 6: Final answer
    x = 15,384.41

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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.