Home / 20,906.52-28,853.04-11,955.34

Finding the Fourth Proportional to 20,906.52, 28,853.04 and 11,955.34

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Solution

The fourth proportional to 20,906.52, 28,853.04 and 11,955.34 is: 16,499.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.52 : 28,853.04 = 11,955.34 : x
  2. Step 2: Convert to fraction form
    20,906.52/28,853.04 = 11,955.34/x
  3. Step 3: Cross multiply
    20,906.52x = 28,853.04 × 11,955.34
  4. Step 4: Simplify right side
    20,906.52x = 344,947,903.23
  5. Step 5: Solve for x
    x = 344,947,903.23/20,906.52
  6. Step 6: Final answer
    x = 16,499.54

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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.