Home / 30,809.94-42,517.74-16,662.78

Finding the Fourth Proportional to 30,809.94, 42,517.74 and 16,662.78

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Solution

The fourth proportional to 30,809.94, 42,517.74 and 16,662.78 is: 22,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.94 : 42,517.74 = 16,662.78 : x
  2. Step 2: Convert to fraction form
    30,809.94/42,517.74 = 16,662.78/x
  3. Step 3: Cross multiply
    30,809.94x = 42,517.74 × 16,662.78
  4. Step 4: Simplify right side
    30,809.94x = 708,463,652.91
  5. Step 5: Solve for x
    x = 708,463,652.91/30,809.94
  6. Step 6: Final answer
    x = 22,994.65

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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.