Home / 30,811.37-42,519.71-16,664.21

Finding the Fourth Proportional to 30,811.37, 42,519.71 and 16,664.21

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Solution

The fourth proportional to 30,811.37, 42,519.71 and 16,664.21 is: 22,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.37 : 42,519.71 = 16,664.21 : x
  2. Step 2: Convert to fraction form
    30,811.37/42,519.71 = 16,664.21/x
  3. Step 3: Cross multiply
    30,811.37x = 42,519.71 × 16,664.21
  4. Step 4: Simplify right side
    30,811.37x = 708,557,080.66
  5. Step 5: Solve for x
    x = 708,557,080.66/30,811.37
  6. Step 6: Final answer
    x = 22,996.61

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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.