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Finding the Fourth Proportional to 13,996.78, 20,998.12 and 4,636.26

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Solution

The fourth proportional to 13,996.78, 20,998.12 and 4,636.26 is: 6,955.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,996.78 : 20,998.12 = 4,636.26 : x
  2. Step 2: Convert to fraction form
    13,996.78/20,998.12 = 4,636.26/x
  3. Step 3: Cross multiply
    13,996.78x = 20,998.12 × 4,636.26
  4. Step 4: Simplify right side
    13,996.78x = 97,352,807.92
  5. Step 5: Solve for x
    x = 97,352,807.92/13,996.78
  6. Step 6: Final answer
    x = 6,955.37

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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.