Home / 11,386.96-17,088.12-3,991.48

Finding the Fourth Proportional to 11,386.96, 17,088.12 and 3,991.48

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Solution

The fourth proportional to 11,386.96, 17,088.12 and 3,991.48 is: 5,989.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.96 : 17,088.12 = 3,991.48 : x
  2. Step 2: Convert to fraction form
    11,386.96/17,088.12 = 3,991.48/x
  3. Step 3: Cross multiply
    11,386.96x = 17,088.12 × 3,991.48
  4. Step 4: Simplify right side
    11,386.96x = 68,206,889.22
  5. Step 5: Solve for x
    x = 68,206,889.22/11,386.96
  6. Step 6: Final answer
    x = 5,989.91

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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.