Home / 11,968.28-17,938.36-5,386.76

Finding the Fourth Proportional to 11,968.28, 17,938.36 and 5,386.76

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Solution

The fourth proportional to 11,968.28, 17,938.36 and 5,386.76 is: 8,073.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,968.28 : 17,938.36 = 5,386.76 : x
  2. Step 2: Convert to fraction form
    11,968.28/17,938.36 = 5,386.76/x
  3. Step 3: Cross multiply
    11,968.28x = 17,938.36 × 5,386.76
  4. Step 4: Simplify right side
    11,968.28x = 96,629,640.11
  5. Step 5: Solve for x
    x = 96,629,640.11/11,968.28
  6. Step 6: Final answer
    x = 8,073.81

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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.