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Finding the Fourth Proportional to 20,349, 30,662.16 and 16,732.25

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Solution

The fourth proportional to 20,349, 30,662.16 and 16,732.25 is: 25,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349 : 30,662.16 = 16,732.25 : x
  2. Step 2: Convert to fraction form
    20,349/30,662.16 = 16,732.25/x
  3. Step 3: Cross multiply
    20,349x = 30,662.16 × 16,732.25
  4. Step 4: Simplify right side
    20,349x = 513,046,926.66
  5. Step 5: Solve for x
    x = 513,046,926.66/20,349
  6. Step 6: Final answer
    x = 25,212.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.