Home / 20,943.68-28,902.43-11,383.56

Finding the Fourth Proportional to 20,943.68, 28,902.43 and 11,383.56

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Solution

The fourth proportional to 20,943.68, 28,902.43 and 11,383.56 is: 15,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.68 : 28,902.43 = 11,383.56 : x
  2. Step 2: Convert to fraction form
    20,943.68/28,902.43 = 11,383.56/x
  3. Step 3: Cross multiply
    20,943.68x = 28,902.43 × 11,383.56
  4. Step 4: Simplify right side
    20,943.68x = 329,012,546.05
  5. Step 5: Solve for x
    x = 329,012,546.05/20,943.68
  6. Step 6: Final answer
    x = 15,709.40

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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.