Home / 12,120.14-16,727.36-6,815.99

Finding the Fourth Proportional to 12,120.14, 16,727.36 and 6,815.99

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Solution

The fourth proportional to 12,120.14, 16,727.36 and 6,815.99 is: 9,406.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.14 : 16,727.36 = 6,815.99 : x
  2. Step 2: Convert to fraction form
    12,120.14/16,727.36 = 6,815.99/x
  3. Step 3: Cross multiply
    12,120.14x = 16,727.36 × 6,815.99
  4. Step 4: Simplify right side
    12,120.14x = 114,013,526.22
  5. Step 5: Solve for x
    x = 114,013,526.22/12,120.14
  6. Step 6: Final answer
    x = 9,406.95

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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.