Home / 30,778.44-42,474.22-16,631.28

Finding the Fourth Proportional to 30,778.44, 42,474.22 and 16,631.28

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Solution

The fourth proportional to 30,778.44, 42,474.22 and 16,631.28 is: 22,951.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,778.44 : 42,474.22 = 16,631.28 : x
  2. Step 2: Convert to fraction form
    30,778.44/42,474.22 = 16,631.28/x
  3. Step 3: Cross multiply
    30,778.44x = 42,474.22 × 16,631.28
  4. Step 4: Simplify right side
    30,778.44x = 706,400,645.60
  5. Step 5: Solve for x
    x = 706,400,645.60/30,778.44
  6. Step 6: Final answer
    x = 22,951.15

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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.