Home / 12,113.40-18,172.26-3,348.12

Finding the Fourth Proportional to 12,113.40, 18,172.26 and 3,348.12

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Solution

The fourth proportional to 12,113.40, 18,172.26 and 3,348.12 is: 5,022.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.40 : 18,172.26 = 3,348.12 : x
  2. Step 2: Convert to fraction form
    12,113.40/18,172.26 = 3,348.12/x
  3. Step 3: Cross multiply
    12,113.40x = 18,172.26 × 3,348.12
  4. Step 4: Simplify right side
    12,113.40x = 60,842,907.15
  5. Step 5: Solve for x
    x = 60,842,907.15/12,113.40
  6. Step 6: Final answer
    x = 5,022.78

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1.5x scale

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.