Home / 30,879.81-42,613.04-17,450.78

Finding the Fourth Proportional to 30,879.81, 42,613.04 and 17,450.78

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Solution

The fourth proportional to 30,879.81, 42,613.04 and 17,450.78 is: 24,081.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.81 : 42,613.04 = 17,450.78 : x
  2. Step 2: Convert to fraction form
    30,879.81/42,613.04 = 17,450.78/x
  3. Step 3: Cross multiply
    30,879.81x = 42,613.04 × 17,450.78
  4. Step 4: Simplify right side
    30,879.81x = 743,630,485.85
  5. Step 5: Solve for x
    x = 743,630,485.85/30,879.81
  6. Step 6: Final answer
    x = 24,081.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.