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Finding the Fourth Proportional to 69,403.69, 104,105.17 and 16,813.18

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Solution

The fourth proportional to 69,403.69, 104,105.17 and 16,813.18 is: 25,219.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,403.69 : 104,105.17 = 16,813.18 : x
  2. Step 2: Convert to fraction form
    69,403.69/104,105.17 = 16,813.18/x
  3. Step 3: Cross multiply
    69,403.69x = 104,105.17 × 16,813.18
  4. Step 4: Simplify right side
    69,403.69x = 1,750,338,962.14
  5. Step 5: Solve for x
    x = 1,750,338,962.14/69,403.69
  6. Step 6: Final answer
    x = 25,219.68

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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.