Home / 31,331.58-43,236.81-16,990.62

Finding the Fourth Proportional to 31,331.58, 43,236.81 and 16,990.62

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Solution

The fourth proportional to 31,331.58, 43,236.81 and 16,990.62 is: 23,446.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.58 : 43,236.81 = 16,990.62 : x
  2. Step 2: Convert to fraction form
    31,331.58/43,236.81 = 16,990.62/x
  3. Step 3: Cross multiply
    31,331.58x = 43,236.81 × 16,990.62
  4. Step 4: Simplify right side
    31,331.58x = 734,620,208.72
  5. Step 5: Solve for x
    x = 734,620,208.72/31,331.58
  6. Step 6: Final answer
    x = 23,446.64

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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.