Home / 12,078.05-16,668.71-6,772.15

Finding the Fourth Proportional to 12,078.05, 16,668.71 and 6,772.15

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Solution

The fourth proportional to 12,078.05, 16,668.71 and 6,772.15 is: 9,346.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.05 : 16,668.71 = 6,772.15 : x
  2. Step 2: Convert to fraction form
    12,078.05/16,668.71 = 6,772.15/x
  3. Step 3: Cross multiply
    12,078.05x = 16,668.71 × 6,772.15
  4. Step 4: Simplify right side
    12,078.05x = 112,882,979.69
  5. Step 5: Solve for x
    x = 112,882,979.69/12,078.05
  6. Step 6: Final answer
    x = 9,346.12

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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.