Home / 12,122.81-16,729.68-6,745.67

Finding the Fourth Proportional to 12,122.81, 16,729.68 and 6,745.67

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Solution

The fourth proportional to 12,122.81, 16,729.68 and 6,745.67 is: 9,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.81 : 16,729.68 = 6,745.67 : x
  2. Step 2: Convert to fraction form
    12,122.81/16,729.68 = 6,745.67/x
  3. Step 3: Cross multiply
    12,122.81x = 16,729.68 × 6,745.67
  4. Step 4: Simplify right side
    12,122.81x = 112,852,816.84
  5. Step 5: Solve for x
    x = 112,852,816.84/12,122.81
  6. Step 6: Final answer
    x = 9,309.13

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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.