Home / 12,291.78-18,440.73-5,268.33

Finding the Fourth Proportional to 12,291.78, 18,440.73 and 5,268.33

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Solution

The fourth proportional to 12,291.78, 18,440.73 and 5,268.33 is: 7,903.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.78 : 18,440.73 = 5,268.33 : x
  2. Step 2: Convert to fraction form
    12,291.78/18,440.73 = 5,268.33/x
  3. Step 3: Cross multiply
    12,291.78x = 18,440.73 × 5,268.33
  4. Step 4: Simplify right side
    12,291.78x = 97,151,851.08
  5. Step 5: Solve for x
    x = 97,151,851.08/12,291.78
  6. Step 6: Final answer
    x = 7,903.81

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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.