Home / 20,771.01-28,666.44-11,696.65

Finding the Fourth Proportional to 20,771.01, 28,666.44 and 11,696.65

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Solution

The fourth proportional to 20,771.01, 28,666.44 and 11,696.65 is: 16,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.01 : 28,666.44 = 11,696.65 : x
  2. Step 2: Convert to fraction form
    20,771.01/28,666.44 = 11,696.65/x
  3. Step 3: Cross multiply
    20,771.01x = 28,666.44 × 11,696.65
  4. Step 4: Simplify right side
    20,771.01x = 335,301,315.43
  5. Step 5: Solve for x
    x = 335,301,315.43/20,771.01
  6. Step 6: Final answer
    x = 16,142.75

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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.