Home / 18,271.29-27,403.83-5,120.63

Finding the Fourth Proportional to 18,271.29, 27,403.83 and 5,120.63

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Solution

The fourth proportional to 18,271.29, 27,403.83 and 5,120.63 is: 7,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.29 : 27,403.83 = 5,120.63 : x
  2. Step 2: Convert to fraction form
    18,271.29/27,403.83 = 5,120.63/x
  3. Step 3: Cross multiply
    18,271.29x = 27,403.83 × 5,120.63
  4. Step 4: Simplify right side
    18,271.29x = 140,324,736.99
  5. Step 5: Solve for x
    x = 140,324,736.99/18,271.29
  6. Step 6: Final answer
    x = 7,680.07

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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.