Home / 18,343.98-25,315.38-11,272.68

Finding the Fourth Proportional to 18,343.98, 25,315.38 and 11,272.68

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Solution

The fourth proportional to 18,343.98, 25,315.38 and 11,272.68 is: 15,556.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.98 : 25,315.38 = 11,272.68 : x
  2. Step 2: Convert to fraction form
    18,343.98/25,315.38 = 11,272.68/x
  3. Step 3: Cross multiply
    18,343.98x = 25,315.38 × 11,272.68
  4. Step 4: Simplify right side
    18,343.98x = 285,372,177.82
  5. Step 5: Solve for x
    x = 285,372,177.82/18,343.98
  6. Step 6: Final answer
    x = 15,556.72

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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.