Home / 20,771.78-31,154.24-6,741.83

Finding the Fourth Proportional to 20,771.78, 31,154.24 and 6,741.83

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Solution

The fourth proportional to 20,771.78, 31,154.24 and 6,741.83 is: 10,111.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.78 : 31,154.24 = 6,741.83 : x
  2. Step 2: Convert to fraction form
    20,771.78/31,154.24 = 6,741.83/x
  3. Step 3: Cross multiply
    20,771.78x = 31,154.24 × 6,741.83
  4. Step 4: Simplify right side
    20,771.78x = 210,036,684.60
  5. Step 5: Solve for x
    x = 210,036,684.60/20,771.78
  6. Step 6: Final answer
    x = 10,111.64

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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.