Home / 12,738.40-19,079.90-7,793.08

Finding the Fourth Proportional to 12,738.40, 19,079.90 and 7,793.08

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Solution

The fourth proportional to 12,738.40, 19,079.90 and 7,793.08 is: 11,672.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.40 : 19,079.90 = 7,793.08 : x
  2. Step 2: Convert to fraction form
    12,738.40/19,079.90 = 7,793.08/x
  3. Step 3: Cross multiply
    12,738.40x = 19,079.90 × 7,793.08
  4. Step 4: Simplify right side
    12,738.40x = 148,691,187.09
  5. Step 5: Solve for x
    x = 148,691,187.09/12,738.40
  6. Step 6: Final answer
    x = 11,672.67

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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.