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Finding the Fourth Proportional to 30,304.80, 41,812.20 and 18,202.02

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Solution

The fourth proportional to 30,304.80, 41,812.20 and 18,202.02 is: 25,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,304.80 : 41,812.20 = 18,202.02 : x
  2. Step 2: Convert to fraction form
    30,304.80/41,812.20 = 18,202.02/x
  3. Step 3: Cross multiply
    30,304.80x = 41,812.20 × 18,202.02
  4. Step 4: Simplify right side
    30,304.80x = 761,066,500.64
  5. Step 5: Solve for x
    x = 761,066,500.64/30,304.80
  6. Step 6: Final answer
    x = 25,113.73

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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.