Home / 11,868.95-16,378.58-6,491.67

Finding the Fourth Proportional to 11,868.95, 16,378.58 and 6,491.67

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Solution

The fourth proportional to 11,868.95, 16,378.58 and 6,491.67 is: 8,958.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.95 : 16,378.58 = 6,491.67 : x
  2. Step 2: Convert to fraction form
    11,868.95/16,378.58 = 6,491.67/x
  3. Step 3: Cross multiply
    11,868.95x = 16,378.58 × 6,491.67
  4. Step 4: Simplify right side
    11,868.95x = 106,324,303.97
  5. Step 5: Solve for x
    x = 106,324,303.97/11,868.95
  6. Step 6: Final answer
    x = 8,958.19

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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.