Home / 12,218.96-18,339.24-8,047.28

Finding the Fourth Proportional to 12,218.96, 18,339.24 and 8,047.28

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Solution

The fourth proportional to 12,218.96, 18,339.24 and 8,047.28 is: 12,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.96 : 18,339.24 = 8,047.28 : x
  2. Step 2: Convert to fraction form
    12,218.96/18,339.24 = 8,047.28/x
  3. Step 3: Cross multiply
    12,218.96x = 18,339.24 × 8,047.28
  4. Step 4: Simplify right side
    12,218.96x = 147,580,999.27
  5. Step 5: Solve for x
    x = 147,580,999.27/12,218.96
  6. Step 6: Final answer
    x = 12,078.03

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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.