Home / 20,409.86-30,613.34-5,416.64

Finding the Fourth Proportional to 20,409.86, 30,613.34 and 5,416.64

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Solution

The fourth proportional to 20,409.86, 30,613.34 and 5,416.64 is: 8,124.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.86 : 30,613.34 = 5,416.64 : x
  2. Step 2: Convert to fraction form
    20,409.86/30,613.34 = 5,416.64/x
  3. Step 3: Cross multiply
    20,409.86x = 30,613.34 × 5,416.64
  4. Step 4: Simplify right side
    20,409.86x = 165,821,261.83
  5. Step 5: Solve for x
    x = 165,821,261.83/20,409.86
  6. Step 6: Final answer
    x = 8,124.57

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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.