Home / 13,661.14-18,855.33-8,072.98

Finding the Fourth Proportional to 13,661.14, 18,855.33 and 8,072.98

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Solution

The fourth proportional to 13,661.14, 18,855.33 and 8,072.98 is: 11,142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.14 : 18,855.33 = 8,072.98 : x
  2. Step 2: Convert to fraction form
    13,661.14/18,855.33 = 8,072.98/x
  3. Step 3: Cross multiply
    13,661.14x = 18,855.33 × 8,072.98
  4. Step 4: Simplify right side
    13,661.14x = 152,218,701.98
  5. Step 5: Solve for x
    x = 152,218,701.98/13,661.14
  6. Step 6: Final answer
    x = 11,142.46

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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.