Home / 28,511.82-39,346.47-15,936.57

Finding the Fourth Proportional to 28,511.82, 39,346.47 and 15,936.57

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Solution

The fourth proportional to 28,511.82, 39,346.47 and 15,936.57 is: 21,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.82 : 39,346.47 = 15,936.57 : x
  2. Step 2: Convert to fraction form
    28,511.82/39,346.47 = 15,936.57/x
  3. Step 3: Cross multiply
    28,511.82x = 39,346.47 × 15,936.57
  4. Step 4: Simplify right side
    28,511.82x = 627,047,773.41
  5. Step 5: Solve for x
    x = 627,047,773.41/28,511.82
  6. Step 6: Final answer
    x = 21,992.56

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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.