Home / 20,514.99-30,759.34-8,665.55

Finding the Fourth Proportional to 20,514.99, 30,759.34 and 8,665.55

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Solution

The fourth proportional to 20,514.99, 30,759.34 and 8,665.55 is: 12,992.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.99 : 30,759.34 = 8,665.55 : x
  2. Step 2: Convert to fraction form
    20,514.99/30,759.34 = 8,665.55/x
  3. Step 3: Cross multiply
    20,514.99x = 30,759.34 × 8,665.55
  4. Step 4: Simplify right side
    20,514.99x = 266,546,598.74
  5. Step 5: Solve for x
    x = 266,546,598.74/20,514.99
  6. Step 6: Final answer
    x = 12,992.77

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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.