Home / 20,118.84-27,763.68-11,166.36

Finding the Fourth Proportional to 20,118.84, 27,763.68 and 11,166.36

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Solution

The fourth proportional to 20,118.84, 27,763.68 and 11,166.36 is: 15,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.84 : 27,763.68 = 11,166.36 : x
  2. Step 2: Convert to fraction form
    20,118.84/27,763.68 = 11,166.36/x
  3. Step 3: Cross multiply
    20,118.84x = 27,763.68 × 11,166.36
  4. Step 4: Simplify right side
    20,118.84x = 310,019,245.80
  5. Step 5: Solve for x
    x = 310,019,245.80/20,118.84
  6. Step 6: Final answer
    x = 15,409.40

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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.