Home / 18,728.22-25,836.06-12,680.67

Finding the Fourth Proportional to 18,728.22, 25,836.06 and 12,680.67

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Solution

The fourth proportional to 18,728.22, 25,836.06 and 12,680.67 is: 17,493.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.22 : 25,836.06 = 12,680.67 : x
  2. Step 2: Convert to fraction form
    18,728.22/25,836.06 = 12,680.67/x
  3. Step 3: Cross multiply
    18,728.22x = 25,836.06 × 12,680.67
  4. Step 4: Simplify right side
    18,728.22x = 327,618,550.96
  5. Step 5: Solve for x
    x = 327,618,550.96/18,728.22
  6. Step 6: Final answer
    x = 17,493.31

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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.