Home / 12,087.21-16,679.22-6,780.99

Finding the Fourth Proportional to 12,087.21, 16,679.22 and 6,780.99

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Solution

The fourth proportional to 12,087.21, 16,679.22 and 6,780.99 is: 9,357.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.21 : 16,679.22 = 6,780.99 : x
  2. Step 2: Convert to fraction form
    12,087.21/16,679.22 = 6,780.99/x
  3. Step 3: Cross multiply
    12,087.21x = 16,679.22 × 6,780.99
  4. Step 4: Simplify right side
    12,087.21x = 113,101,624.03
  5. Step 5: Solve for x
    x = 113,101,624.03/12,087.21
  6. Step 6: Final answer
    x = 9,357.13

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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.