Home / 13,857.49-20,786.85-5,087.62

Finding the Fourth Proportional to 13,857.49, 20,786.85 and 5,087.62

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Solution

The fourth proportional to 13,857.49, 20,786.85 and 5,087.62 is: 7,631.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.49 : 20,786.85 = 5,087.62 : x
  2. Step 2: Convert to fraction form
    13,857.49/20,786.85 = 5,087.62/x
  3. Step 3: Cross multiply
    13,857.49x = 20,786.85 × 5,087.62
  4. Step 4: Simplify right side
    13,857.49x = 105,755,593.80
  5. Step 5: Solve for x
    x = 105,755,593.80/13,857.49
  6. Step 6: Final answer
    x = 7,631.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.