Home / 20,902.68-28,846.26-11,471.58

Finding the Fourth Proportional to 20,902.68, 28,846.26 and 11,471.58

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Solution

The fourth proportional to 20,902.68, 28,846.26 and 11,471.58 is: 15,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.68 : 28,846.26 = 11,471.58 : x
  2. Step 2: Convert to fraction form
    20,902.68/28,846.26 = 11,471.58/x
  3. Step 3: Cross multiply
    20,902.68x = 28,846.26 × 11,471.58
  4. Step 4: Simplify right side
    20,902.68x = 330,912,179.29
  5. Step 5: Solve for x
    x = 330,912,179.29/20,902.68
  6. Step 6: Final answer
    x = 15,831.09

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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.