Home / 12,085.86-18,028.35-11,885.37

Finding the Fourth Proportional to 12,085.86, 18,028.35 and 11,885.37

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Solution

The fourth proportional to 12,085.86, 18,028.35 and 11,885.37 is: 17,729.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.86 : 18,028.35 = 11,885.37 : x
  2. Step 2: Convert to fraction form
    12,085.86/18,028.35 = 11,885.37/x
  3. Step 3: Cross multiply
    12,085.86x = 18,028.35 × 11,885.37
  4. Step 4: Simplify right side
    12,085.86x = 214,273,610.24
  5. Step 5: Solve for x
    x = 214,273,610.24/12,085.86
  6. Step 6: Final answer
    x = 17,729.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.