Home / 30,960.84-42,725.57-16,813.78

Finding the Fourth Proportional to 30,960.84, 42,725.57 and 16,813.78

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Solution

The fourth proportional to 30,960.84, 42,725.57 and 16,813.78 is: 23,202.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,960.84 : 42,725.57 = 16,813.78 : x
  2. Step 2: Convert to fraction form
    30,960.84/42,725.57 = 16,813.78/x
  3. Step 3: Cross multiply
    30,960.84x = 42,725.57 × 16,813.78
  4. Step 4: Simplify right side
    30,960.84x = 718,378,334.35
  5. Step 5: Solve for x
    x = 718,378,334.35/30,960.84
  6. Step 6: Final answer
    x = 23,202.81

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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.