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Finding the Fourth Proportional to 26,605.20, 39,902.20 and 13,445.20

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Solution

The fourth proportional to 26,605.20, 39,902.20 and 13,445.20 is: 20,164.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,605.20 : 39,902.20 = 13,445.20 : x
  2. Step 2: Convert to fraction form
    26,605.20/39,902.20 = 13,445.20/x
  3. Step 3: Cross multiply
    26,605.20x = 39,902.20 × 13,445.20
  4. Step 4: Simplify right side
    26,605.20x = 536,493,059.44
  5. Step 5: Solve for x
    x = 536,493,059.44/26,605.20
  6. Step 6: Final answer
    x = 20,164.97

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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.