Home / 20,119.38-27,763.45-11,166.90

Finding the Fourth Proportional to 20,119.38, 27,763.45 and 11,166.90

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Solution

The fourth proportional to 20,119.38, 27,763.45 and 11,166.90 is: 15,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.38 : 27,763.45 = 11,166.90 : x
  2. Step 2: Convert to fraction form
    20,119.38/27,763.45 = 11,166.90/x
  3. Step 3: Cross multiply
    20,119.38x = 27,763.45 × 11,166.90
  4. Step 4: Simplify right side
    20,119.38x = 310,031,669.81
  5. Step 5: Solve for x
    x = 310,031,669.81/20,119.38
  6. Step 6: Final answer
    x = 15,409.60

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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.