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Finding the Fourth Proportional to 28,394.56, 42,596.98 and 11,745.56

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Solution

The fourth proportional to 28,394.56, 42,596.98 and 11,745.56 is: 17,620.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,394.56 : 42,596.98 = 11,745.56 : x
  2. Step 2: Convert to fraction form
    28,394.56/42,596.98 = 11,745.56/x
  3. Step 3: Cross multiply
    28,394.56x = 42,596.98 × 11,745.56
  4. Step 4: Simplify right side
    28,394.56x = 500,325,384.41
  5. Step 5: Solve for x
    x = 500,325,384.41/28,394.56
  6. Step 6: Final answer
    x = 17,620.47

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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.