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Finding the Fourth Proportional to 30,394.80, 41,940.63 and 16,964.80

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Solution

The fourth proportional to 30,394.80, 41,940.63 and 16,964.80 is: 23,409.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,394.80 : 41,940.63 = 16,964.80 : x
  2. Step 2: Convert to fraction form
    30,394.80/41,940.63 = 16,964.80/x
  3. Step 3: Cross multiply
    30,394.80x = 41,940.63 × 16,964.80
  4. Step 4: Simplify right side
    30,394.80x = 711,514,399.82
  5. Step 5: Solve for x
    x = 711,514,399.82/30,394.80
  6. Step 6: Final answer
    x = 23,409.08

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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.