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Finding the Fourth Proportional to 30,993.34, 42,769.60 and 16,845.88

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Solution

The fourth proportional to 30,993.34, 42,769.60 and 16,845.88 is: 23,246.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,993.34 : 42,769.60 = 16,845.88 : x
  2. Step 2: Convert to fraction form
    30,993.34/42,769.60 = 16,845.88/x
  3. Step 3: Cross multiply
    30,993.34x = 42,769.60 × 16,845.88
  4. Step 4: Simplify right side
    30,993.34x = 720,491,549.25
  5. Step 5: Solve for x
    x = 720,491,549.25/30,993.34
  6. Step 6: Final answer
    x = 23,246.66

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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.