Home / 12,111.58-18,177.09-6,269.86

Finding the Fourth Proportional to 12,111.58, 18,177.09 and 6,269.86

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Solution

The fourth proportional to 12,111.58, 18,177.09 and 6,269.86 is: 9,409.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.58 : 18,177.09 = 6,269.86 : x
  2. Step 2: Convert to fraction form
    12,111.58/18,177.09 = 6,269.86/x
  3. Step 3: Cross multiply
    12,111.58x = 18,177.09 × 6,269.86
  4. Step 4: Simplify right side
    12,111.58x = 113,967,809.51
  5. Step 5: Solve for x
    x = 113,967,809.51/12,111.58
  6. Step 6: Final answer
    x = 9,409.82

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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.