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Finding the Fourth Proportional to 30,270.90, 41,769.03 and 16,842.12

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Solution

The fourth proportional to 30,270.90, 41,769.03 and 16,842.12 is: 23,239.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,270.90 : 41,769.03 = 16,842.12 : x
  2. Step 2: Convert to fraction form
    30,270.90/41,769.03 = 16,842.12/x
  3. Step 3: Cross multiply
    30,270.90x = 41,769.03 × 16,842.12
  4. Step 4: Simplify right side
    30,270.90x = 703,479,015.54
  5. Step 5: Solve for x
    x = 703,479,015.54/30,270.90
  6. Step 6: Final answer
    x = 23,239.45

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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.