Home / 20,119.13-27,763.11-11,166.65

Finding the Fourth Proportional to 20,119.13, 27,763.11 and 11,166.65

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Solution

The fourth proportional to 20,119.13, 27,763.11 and 11,166.65 is: 15,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.13 : 27,763.11 = 11,166.65 : x
  2. Step 2: Convert to fraction form
    20,119.13/27,763.11 = 11,166.65/x
  3. Step 3: Cross multiply
    20,119.13x = 27,763.11 × 11,166.65
  4. Step 4: Simplify right side
    20,119.13x = 310,020,793.47
  5. Step 5: Solve for x
    x = 310,020,793.47/20,119.13
  6. Step 6: Final answer
    x = 15,409.26

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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.