Home / 19,128.20-28,692.06-5,277.08

Finding the Fourth Proportional to 19,128.20, 28,692.06 and 5,277.08

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Solution

The fourth proportional to 19,128.20, 28,692.06 and 5,277.08 is: 7,915.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.20 : 28,692.06 = 5,277.08 : x
  2. Step 2: Convert to fraction form
    19,128.20/28,692.06 = 5,277.08/x
  3. Step 3: Cross multiply
    19,128.20x = 28,692.06 × 5,277.08
  4. Step 4: Simplify right side
    19,128.20x = 151,410,295.98
  5. Step 5: Solve for x
    x = 151,410,295.98/19,128.20
  6. Step 6: Final answer
    x = 7,915.55

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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.