Home / 20,636.93-30,937.61-8,779.85

Finding the Fourth Proportional to 20,636.93, 30,937.61 and 8,779.85

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Solution

The fourth proportional to 20,636.93, 30,937.61 and 8,779.85 is: 13,162.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.93 : 30,937.61 = 8,779.85 : x
  2. Step 2: Convert to fraction form
    20,636.93/30,937.61 = 8,779.85/x
  3. Step 3: Cross multiply
    20,636.93x = 30,937.61 × 8,779.85
  4. Step 4: Simplify right side
    20,636.93x = 271,627,558.44
  5. Step 5: Solve for x
    x = 271,627,558.44/20,636.93
  6. Step 6: Final answer
    x = 13,162.21

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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.