Home / 20,481.37-28,258.63-11,528.35

Finding the Fourth Proportional to 20,481.37, 28,258.63 and 11,528.35

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Solution

The fourth proportional to 20,481.37, 28,258.63 and 11,528.35 is: 15,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.37 : 28,258.63 = 11,528.35 : x
  2. Step 2: Convert to fraction form
    20,481.37/28,258.63 = 11,528.35/x
  3. Step 3: Cross multiply
    20,481.37x = 28,258.63 × 11,528.35
  4. Step 4: Simplify right side
    20,481.37x = 325,775,377.16
  5. Step 5: Solve for x
    x = 325,775,377.16/20,481.37
  6. Step 6: Final answer
    x = 15,905.94

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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.