Home / 12,112.85-18,169.28-3,347.76

Finding the Fourth Proportional to 12,112.85, 18,169.28 and 3,347.76

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Solution

The fourth proportional to 12,112.85, 18,169.28 and 3,347.76 is: 5,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.85 : 18,169.28 = 3,347.76 : x
  2. Step 2: Convert to fraction form
    12,112.85/18,169.28 = 3,347.76/x
  3. Step 3: Cross multiply
    12,112.85x = 18,169.28 × 3,347.76
  4. Step 4: Simplify right side
    12,112.85x = 60,826,372.07
  5. Step 5: Solve for x
    x = 60,826,372.07/12,112.85
  6. Step 6: Final answer
    x = 5,021.64

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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.