Home / 20,771.96-28,668.02-11,817.72

Finding the Fourth Proportional to 20,771.96, 28,668.02 and 11,817.72

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Solution

The fourth proportional to 20,771.96, 28,668.02 and 11,817.72 is: 16,310.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.96 : 28,668.02 = 11,817.72 : x
  2. Step 2: Convert to fraction form
    20,771.96/28,668.02 = 11,817.72/x
  3. Step 3: Cross multiply
    20,771.96x = 28,668.02 × 11,817.72
  4. Step 4: Simplify right side
    20,771.96x = 338,790,574.23
  5. Step 5: Solve for x
    x = 338,790,574.23/20,771.96
  6. Step 6: Final answer
    x = 16,310.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.