Home / 20,080.86-30,122.77-5,289.67

Finding the Fourth Proportional to 20,080.86, 30,122.77 and 5,289.67

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Solution

The fourth proportional to 20,080.86, 30,122.77 and 5,289.67 is: 7,934.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.86 : 30,122.77 = 5,289.67 : x
  2. Step 2: Convert to fraction form
    20,080.86/30,122.77 = 5,289.67/x
  3. Step 3: Cross multiply
    20,080.86x = 30,122.77 × 5,289.67
  4. Step 4: Simplify right side
    20,080.86x = 159,339,512.79
  5. Step 5: Solve for x
    x = 159,339,512.79/20,080.86
  6. Step 6: Final answer
    x = 7,934.89

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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.