Home / 12,147.34-18,220.40-3,382.06

Finding the Fourth Proportional to 12,147.34, 18,220.40 and 3,382.06

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Solution

The fourth proportional to 12,147.34, 18,220.40 and 3,382.06 is: 5,072.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.34 : 18,220.40 = 3,382.06 : x
  2. Step 2: Convert to fraction form
    12,147.34/18,220.40 = 3,382.06/x
  3. Step 3: Cross multiply
    12,147.34x = 18,220.40 × 3,382.06
  4. Step 4: Simplify right side
    12,147.34x = 61,622,486.02
  5. Step 5: Solve for x
    x = 61,622,486.02/12,147.34
  6. Step 6: Final answer
    x = 5,072.92

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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.