Home / 18,278.99-27,418.37-5,131.37

Finding the Fourth Proportional to 18,278.99, 27,418.37 and 5,131.37

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Solution

The fourth proportional to 18,278.99, 27,418.37 and 5,131.37 is: 7,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.99 : 27,418.37 = 5,131.37 : x
  2. Step 2: Convert to fraction form
    18,278.99/27,418.37 = 5,131.37/x
  3. Step 3: Cross multiply
    18,278.99x = 27,418.37 × 5,131.37
  4. Step 4: Simplify right side
    18,278.99x = 140,693,638.52
  5. Step 5: Solve for x
    x = 140,693,638.52/18,278.99
  6. Step 6: Final answer
    x = 7,697.02

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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.