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Finding the Fourth Proportional to 28,692.60, 43,041.37 and 7,916.10

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Solution

The fourth proportional to 28,692.60, 43,041.37 and 7,916.10 is: 11,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.60 : 43,041.37 = 7,916.10 : x
  2. Step 2: Convert to fraction form
    28,692.60/43,041.37 = 7,916.10/x
  3. Step 3: Cross multiply
    28,692.60x = 43,041.37 × 7,916.10
  4. Step 4: Simplify right side
    28,692.60x = 340,719,573.85
  5. Step 5: Solve for x
    x = 340,719,573.85/28,692.60
  6. Step 6: Final answer
    x = 11,874.83

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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.