Home / 30,778.98-42,474.99-16,631.82

Finding the Fourth Proportional to 30,778.98, 42,474.99 and 16,631.82

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Solution

The fourth proportional to 30,778.98, 42,474.99 and 16,631.82 is: 22,951.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,778.98 : 42,474.99 = 16,631.82 : x
  2. Step 2: Convert to fraction form
    30,778.98/42,474.99 = 16,631.82/x
  3. Step 3: Cross multiply
    30,778.98x = 42,474.99 × 16,631.82
  4. Step 4: Simplify right side
    30,778.98x = 706,436,388.18
  5. Step 5: Solve for x
    x = 706,436,388.18/30,778.98
  6. Step 6: Final answer
    x = 22,951.91

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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.