Home / 20,391.35-30,588.73-8,704.67

Finding the Fourth Proportional to 20,391.35, 30,588.73 and 8,704.67

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Solution

The fourth proportional to 20,391.35, 30,588.73 and 8,704.67 is: 13,057.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.35 : 30,588.73 = 8,704.67 : x
  2. Step 2: Convert to fraction form
    20,391.35/30,588.73 = 8,704.67/x
  3. Step 3: Cross multiply
    20,391.35x = 30,588.73 × 8,704.67
  4. Step 4: Simplify right side
    20,391.35x = 266,264,625.66
  5. Step 5: Solve for x
    x = 266,264,625.66/20,391.35
  6. Step 6: Final answer
    x = 13,057.73

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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.