Home / 20,559.85-30,838.41-8,081.99

Finding the Fourth Proportional to 20,559.85, 30,838.41 and 8,081.99

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Solution

The fourth proportional to 20,559.85, 30,838.41 and 8,081.99 is: 12,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.85 : 30,838.41 = 8,081.99 : x
  2. Step 2: Convert to fraction form
    20,559.85/30,838.41 = 8,081.99/x
  3. Step 3: Cross multiply
    20,559.85x = 30,838.41 × 8,081.99
  4. Step 4: Simplify right side
    20,559.85x = 249,235,714.69
  5. Step 5: Solve for x
    x = 249,235,714.69/20,559.85
  6. Step 6: Final answer
    x = 12,122.45

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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.