Home / 12,120.81-16,726.91-6,743.67

Finding the Fourth Proportional to 12,120.81, 16,726.91 and 6,743.67

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Solution

The fourth proportional to 12,120.81, 16,726.91 and 6,743.67 is: 9,306.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.81 : 16,726.91 = 6,743.67 : x
  2. Step 2: Convert to fraction form
    12,120.81/16,726.91 = 6,743.67/x
  3. Step 3: Cross multiply
    12,120.81x = 16,726.91 × 6,743.67
  4. Step 4: Simplify right side
    12,120.81x = 112,800,761.16
  5. Step 5: Solve for x
    x = 112,800,761.16/12,120.81
  6. Step 6: Final answer
    x = 9,306.37

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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.