Home / 20,514.75-30,775.40-8,668.63

Finding the Fourth Proportional to 20,514.75, 30,775.40 and 8,668.63

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Solution

The fourth proportional to 20,514.75, 30,775.40 and 8,668.63 is: 13,004.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.75 : 30,775.40 = 8,668.63 : x
  2. Step 2: Convert to fraction form
    20,514.75/30,775.40 = 8,668.63/x
  3. Step 3: Cross multiply
    20,514.75x = 30,775.40 × 8,668.63
  4. Step 4: Simplify right side
    20,514.75x = 266,780,583.34
  5. Step 5: Solve for x
    x = 266,780,583.34/20,514.75
  6. Step 6: Final answer
    x = 13,004.33

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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.