Home / 20,118.73-27,763.81-11,166.34

Finding the Fourth Proportional to 20,118.73, 27,763.81 and 11,166.34

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Solution

The fourth proportional to 20,118.73, 27,763.81 and 11,166.34 is: 15,409.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.73 : 27,763.81 = 11,166.34 : x
  2. Step 2: Convert to fraction form
    20,118.73/27,763.81 = 11,166.34/x
  3. Step 3: Cross multiply
    20,118.73x = 27,763.81 × 11,166.34
  4. Step 4: Simplify right side
    20,118.73x = 310,020,142.16
  5. Step 5: Solve for x
    x = 310,020,142.16/20,118.73
  6. Step 6: Final answer
    x = 15,409.53

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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.