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Finding the Fourth Proportional to 13,837.76, 20,658.10 and 13,351.76

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Solution

The fourth proportional to 13,837.76, 20,658.10 and 13,351.76 is: 19,932.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,837.76 : 20,658.10 = 13,351.76 : x
  2. Step 2: Convert to fraction form
    13,837.76/20,658.10 = 13,351.76/x
  3. Step 3: Cross multiply
    13,837.76x = 20,658.10 × 13,351.76
  4. Step 4: Simplify right side
    13,837.76x = 275,821,993.26
  5. Step 5: Solve for x
    x = 275,821,993.26/13,837.76
  6. Step 6: Final answer
    x = 19,932.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.