Home / 12,299.09-18,452.73-3,980.28

Finding the Fourth Proportional to 12,299.09, 18,452.73 and 3,980.28

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Solution

The fourth proportional to 12,299.09, 18,452.73 and 3,980.28 is: 5,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.09 : 18,452.73 = 3,980.28 : x
  2. Step 2: Convert to fraction form
    12,299.09/18,452.73 = 3,980.28/x
  3. Step 3: Cross multiply
    12,299.09x = 18,452.73 × 3,980.28
  4. Step 4: Simplify right side
    12,299.09x = 73,447,032.16
  5. Step 5: Solve for x
    x = 73,447,032.16/12,299.09
  6. Step 6: Final answer
    x = 5,971.75

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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.