Home / 12,087.49-16,681.94-8,116.87

Finding the Fourth Proportional to 12,087.49, 16,681.94 and 8,116.87

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Solution

The fourth proportional to 12,087.49, 16,681.94 and 8,116.87 is: 11,202.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.49 : 16,681.94 = 8,116.87 : x
  2. Step 2: Convert to fraction form
    12,087.49/16,681.94 = 8,116.87/x
  3. Step 3: Cross multiply
    12,087.49x = 16,681.94 × 8,116.87
  4. Step 4: Simplify right side
    12,087.49x = 135,405,097.74
  5. Step 5: Solve for x
    x = 135,405,097.74/12,087.49
  6. Step 6: Final answer
    x = 11,202.09

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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.