Home / 28,758.78-43,137.92-7,982.28

Finding the Fourth Proportional to 28,758.78, 43,137.92 and 7,982.28

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Solution

The fourth proportional to 28,758.78, 43,137.92 and 7,982.28 is: 11,973.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,758.78 : 43,137.92 = 7,982.28 : x
  2. Step 2: Convert to fraction form
    28,758.78/43,137.92 = 7,982.28/x
  3. Step 3: Cross multiply
    28,758.78x = 43,137.92 × 7,982.28
  4. Step 4: Simplify right side
    28,758.78x = 344,338,956.06
  5. Step 5: Solve for x
    x = 344,338,956.06/28,758.78
  6. Step 6: Final answer
    x = 11,973.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.