Home / 20,977.78-28,949.32-11,546.34

Finding the Fourth Proportional to 20,977.78, 28,949.32 and 11,546.34

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Solution

The fourth proportional to 20,977.78, 28,949.32 and 11,546.34 is: 15,933.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.78 : 28,949.32 = 11,546.34 : x
  2. Step 2: Convert to fraction form
    20,977.78/28,949.32 = 11,546.34/x
  3. Step 3: Cross multiply
    20,977.78x = 28,949.32 × 11,546.34
  4. Step 4: Simplify right side
    20,977.78x = 334,258,691.49
  5. Step 5: Solve for x
    x = 334,258,691.49/20,977.78
  6. Step 6: Final answer
    x = 15,933.94

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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.