Home / 28,856.21-39,823.57-16,111.90

Finding the Fourth Proportional to 28,856.21, 39,823.57 and 16,111.90

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Solution

The fourth proportional to 28,856.21, 39,823.57 and 16,111.90 is: 22,235.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.21 : 39,823.57 = 16,111.90 : x
  2. Step 2: Convert to fraction form
    28,856.21/39,823.57 = 16,111.90/x
  3. Step 3: Cross multiply
    28,856.21x = 39,823.57 × 16,111.90
  4. Step 4: Simplify right side
    28,856.21x = 641,633,377.48
  5. Step 5: Solve for x
    x = 641,633,377.48/28,856.21
  6. Step 6: Final answer
    x = 22,235.54

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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.