Home / 20,362.36-28,101.78-11,409.73

Finding the Fourth Proportional to 20,362.36, 28,101.78 and 11,409.73

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Solution

The fourth proportional to 20,362.36, 28,101.78 and 11,409.73 is: 15,746.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.36 : 28,101.78 = 11,409.73 : x
  2. Step 2: Convert to fraction form
    20,362.36/28,101.78 = 11,409.73/x
  3. Step 3: Cross multiply
    20,362.36x = 28,101.78 × 11,409.73
  4. Step 4: Simplify right side
    20,362.36x = 320,633,722.32
  5. Step 5: Solve for x
    x = 320,633,722.32/20,362.36
  6. Step 6: Final answer
    x = 15,746.39

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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.