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Finding the Fourth Proportional to 28,847.40, 39,807 and 16,099.44

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Solution

The fourth proportional to 28,847.40, 39,807 and 16,099.44 is: 22,215.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,847.40 : 39,807 = 16,099.44 : x
  2. Step 2: Convert to fraction form
    28,847.40/39,807 = 16,099.44/x
  3. Step 3: Cross multiply
    28,847.40x = 39,807 × 16,099.44
  4. Step 4: Simplify right side
    28,847.40x = 640,870,408.08
  5. Step 5: Solve for x
    x = 640,870,408.08/28,847.40
  6. Step 6: Final answer
    x = 22,215.88

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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.