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Finding the Fourth Proportional to 12,139.01, 16,751.79 and 6,833.84

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Solution

The fourth proportional to 12,139.01, 16,751.79 and 6,833.84 is: 9,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139.01 : 16,751.79 = 6,833.84 : x
  2. Step 2: Convert to fraction form
    12,139.01/16,751.79 = 6,833.84/x
  3. Step 3: Cross multiply
    12,139.01x = 16,751.79 × 6,833.84
  4. Step 4: Simplify right side
    12,139.01x = 114,479,052.57
  5. Step 5: Solve for x
    x = 114,479,052.57/12,139.01
  6. Step 6: Final answer
    x = 9,430.67

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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.