Home / 30,968.63-42,736.82-18,222.30

Finding the Fourth Proportional to 30,968.63, 42,736.82 and 18,222.30

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Solution

The fourth proportional to 30,968.63, 42,736.82 and 18,222.30 is: 25,146.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,968.63 : 42,736.82 = 18,222.30 : x
  2. Step 2: Convert to fraction form
    30,968.63/42,736.82 = 18,222.30/x
  3. Step 3: Cross multiply
    30,968.63x = 42,736.82 × 18,222.30
  4. Step 4: Simplify right side
    30,968.63x = 778,763,063.97
  5. Step 5: Solve for x
    x = 778,763,063.97/30,968.63
  6. Step 6: Final answer
    x = 25,146.84

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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.