Home / 20,616.69-30,929.21-8,770.44

Finding the Fourth Proportional to 20,616.69, 30,929.21 and 8,770.44

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Solution

The fourth proportional to 20,616.69, 30,929.21 and 8,770.44 is: 13,157.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.69 : 30,929.21 = 8,770.44 : x
  2. Step 2: Convert to fraction form
    20,616.69/30,929.21 = 8,770.44/x
  3. Step 3: Cross multiply
    20,616.69x = 30,929.21 × 8,770.44
  4. Step 4: Simplify right side
    20,616.69x = 271,262,885.57
  5. Step 5: Solve for x
    x = 271,262,885.57/20,616.69
  6. Step 6: Final answer
    x = 13,157.44

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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.