Home / 20,958.35-31,406.64-15,668.54

Finding the Fourth Proportional to 20,958.35, 31,406.64 and 15,668.54

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Solution

The fourth proportional to 20,958.35, 31,406.64 and 15,668.54 is: 23,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.35 : 31,406.64 = 15,668.54 : x
  2. Step 2: Convert to fraction form
    20,958.35/31,406.64 = 15,668.54/x
  3. Step 3: Cross multiply
    20,958.35x = 31,406.64 × 15,668.54
  4. Step 4: Simplify right side
    20,958.35x = 492,096,097.09
  5. Step 5: Solve for x
    x = 492,096,097.09/20,958.35
  6. Step 6: Final answer
    x = 23,479.72

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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.