Home / 20,118.66-27,762.93-11,166.54

Finding the Fourth Proportional to 20,118.66, 27,762.93 and 11,166.54

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Solution

The fourth proportional to 20,118.66, 27,762.93 and 11,166.54 is: 15,409.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.66 : 27,762.93 = 11,166.54 : x
  2. Step 2: Convert to fraction form
    20,118.66/27,762.93 = 11,166.54/x
  3. Step 3: Cross multiply
    20,118.66x = 27,762.93 × 11,166.54
  4. Step 4: Simplify right side
    20,118.66x = 310,015,868.36
  5. Step 5: Solve for x
    x = 310,015,868.36/20,118.66
  6. Step 6: Final answer
    x = 15,409.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.