Home / 20,651.09-30,962.72-12,336.91

Finding the Fourth Proportional to 20,651.09, 30,962.72 and 12,336.91

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Solution

The fourth proportional to 20,651.09, 30,962.72 and 12,336.91 is: 18,497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.09 : 30,962.72 = 12,336.91 : x
  2. Step 2: Convert to fraction form
    20,651.09/30,962.72 = 12,336.91/x
  3. Step 3: Cross multiply
    20,651.09x = 30,962.72 × 12,336.91
  4. Step 4: Simplify right side
    20,651.09x = 381,984,243.43
  5. Step 5: Solve for x
    x = 381,984,243.43/20,651.09
  6. Step 6: Final answer
    x = 18,497.05

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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.