Home / 20,527.86-30,790.19-12,631.44

Finding the Fourth Proportional to 20,527.86, 30,790.19 and 12,631.44

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Solution

The fourth proportional to 20,527.86, 30,790.19 and 12,631.44 is: 18,946.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,527.86 : 30,790.19 = 12,631.44 : x
  2. Step 2: Convert to fraction form
    20,527.86/30,790.19 = 12,631.44/x
  3. Step 3: Cross multiply
    20,527.86x = 30,790.19 × 12,631.44
  4. Step 4: Simplify right side
    20,527.86x = 388,924,584.62
  5. Step 5: Solve for x
    x = 388,924,584.62/20,527.86
  6. Step 6: Final answer
    x = 18,946.18

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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.