Home / 18,775.98-28,171.82-8,240.56

Finding the Fourth Proportional to 18,775.98, 28,171.82 and 8,240.56

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Solution

The fourth proportional to 18,775.98, 28,171.82 and 8,240.56 is: 12,364.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.98 : 28,171.82 = 8,240.56 : x
  2. Step 2: Convert to fraction form
    18,775.98/28,171.82 = 8,240.56/x
  3. Step 3: Cross multiply
    18,775.98x = 28,171.82 × 8,240.56
  4. Step 4: Simplify right side
    18,775.98x = 232,151,573.02
  5. Step 5: Solve for x
    x = 232,151,573.02/18,775.98
  6. Step 6: Final answer
    x = 12,364.29

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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.