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Finding the Fourth Proportional to 13,892.05, 20,844.89 and 6,495.42

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Solution

The fourth proportional to 13,892.05, 20,844.89 and 6,495.42 is: 9,746.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.05 : 20,844.89 = 6,495.42 : x
  2. Step 2: Convert to fraction form
    13,892.05/20,844.89 = 6,495.42/x
  3. Step 3: Cross multiply
    13,892.05x = 20,844.89 × 6,495.42
  4. Step 4: Simplify right side
    13,892.05x = 135,396,315.40
  5. Step 5: Solve for x
    x = 135,396,315.40/13,892.05
  6. Step 6: Final answer
    x = 9,746.32

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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.