Home / 20,401.03-28,153.44-11,908.99

Finding the Fourth Proportional to 20,401.03, 28,153.44 and 11,908.99

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Solution

The fourth proportional to 20,401.03, 28,153.44 and 11,908.99 is: 16,434.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.03 : 28,153.44 = 11,908.99 : x
  2. Step 2: Convert to fraction form
    20,401.03/28,153.44 = 11,908.99/x
  3. Step 3: Cross multiply
    20,401.03x = 28,153.44 × 11,908.99
  4. Step 4: Simplify right side
    20,401.03x = 335,278,965.04
  5. Step 5: Solve for x
    x = 335,278,965.04/20,401.03
  6. Step 6: Final answer
    x = 16,434.42

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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.