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Finding the Fourth Proportional to 30,347.56, 41,879.65 and 16,918.54

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Solution

The fourth proportional to 30,347.56, 41,879.65 and 16,918.54 is: 23,347.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,347.56 : 41,879.65 = 16,918.54 : x
  2. Step 2: Convert to fraction form
    30,347.56/41,879.65 = 16,918.54/x
  3. Step 3: Cross multiply
    30,347.56x = 41,879.65 × 16,918.54
  4. Step 4: Simplify right side
    30,347.56x = 708,542,533.71
  5. Step 5: Solve for x
    x = 708,542,533.71/30,347.56
  6. Step 6: Final answer
    x = 23,347.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.