Home / 30,811.25-42,519.49-16,664.09

Finding the Fourth Proportional to 30,811.25, 42,519.49 and 16,664.09

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Solution

The fourth proportional to 30,811.25, 42,519.49 and 16,664.09 is: 22,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.25 : 42,519.49 = 16,664.09 : x
  2. Step 2: Convert to fraction form
    30,811.25/42,519.49 = 16,664.09/x
  3. Step 3: Cross multiply
    30,811.25x = 42,519.49 × 16,664.09
  4. Step 4: Simplify right side
    30,811.25x = 708,548,353.86
  5. Step 5: Solve for x
    x = 708,548,353.86/30,811.25
  6. Step 6: Final answer
    x = 22,996.42

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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.