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Finding the Fourth Proportional to 30,206.80, 45,304 and 11,480.28

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Solution

The fourth proportional to 30,206.80, 45,304 and 11,480.28 is: 17,218.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,206.80 : 45,304 = 11,480.28 : x
  2. Step 2: Convert to fraction form
    30,206.80/45,304 = 11,480.28/x
  3. Step 3: Cross multiply
    30,206.80x = 45,304 × 11,480.28
  4. Step 4: Simplify right side
    30,206.80x = 520,102,605.12
  5. Step 5: Solve for x
    x = 520,102,605.12/30,206.80
  6. Step 6: Final answer
    x = 17,218.06

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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.