Home / 30,190.60-45,304.32-19,081.99

Finding the Fourth Proportional to 30,190.60, 45,304.32 and 19,081.99

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Solution

The fourth proportional to 30,190.60, 45,304.32 and 19,081.99 is: 28,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,190.60 : 45,304.32 = 19,081.99 : x
  2. Step 2: Convert to fraction form
    30,190.60/45,304.32 = 19,081.99/x
  3. Step 3: Cross multiply
    30,190.60x = 45,304.32 × 19,081.99
  4. Step 4: Simplify right side
    30,190.60x = 864,496,581.20
  5. Step 5: Solve for x
    x = 864,496,581.20/30,190.60
  6. Step 6: Final answer
    x = 28,634.63

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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.