Home / 30,172.32-45,192.96-18,450

Finding the Fourth Proportional to 30,172.32, 45,192.96 and 18,450

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Solution

The fourth proportional to 30,172.32, 45,192.96 and 18,450 is: 27,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.32 : 45,192.96 = 18,450 : x
  2. Step 2: Convert to fraction form
    30,172.32/45,192.96 = 18,450/x
  3. Step 3: Cross multiply
    30,172.32x = 45,192.96 × 18,450
  4. Step 4: Simplify right side
    30,172.32x = 833,810,112
  5. Step 5: Solve for x
    x = 833,810,112/30,172.32
  6. Step 6: Final answer
    x = 27,634.94

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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.