Home / 12,239.11-18,344.67-6,976.99

Finding the Fourth Proportional to 12,239.11, 18,344.67 and 6,976.99

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Solution

The fourth proportional to 12,239.11, 18,344.67 and 6,976.99 is: 10,457.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.11 : 18,344.67 = 6,976.99 : x
  2. Step 2: Convert to fraction form
    12,239.11/18,344.67 = 6,976.99/x
  3. Step 3: Cross multiply
    12,239.11x = 18,344.67 × 6,976.99
  4. Step 4: Simplify right side
    12,239.11x = 127,990,579.14
  5. Step 5: Solve for x
    x = 127,990,579.14/12,239.11
  6. Step 6: Final answer
    x = 10,457.51

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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.