Home / 13,979.78-19,292.63-8,012.60

Finding the Fourth Proportional to 13,979.78, 19,292.63 and 8,012.60

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Solution

The fourth proportional to 13,979.78, 19,292.63 and 8,012.60 is: 11,057.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.78 : 19,292.63 = 8,012.60 : x
  2. Step 2: Convert to fraction form
    13,979.78/19,292.63 = 8,012.60/x
  3. Step 3: Cross multiply
    13,979.78x = 19,292.63 × 8,012.60
  4. Step 4: Simplify right side
    13,979.78x = 154,584,087.08
  5. Step 5: Solve for x
    x = 154,584,087.08/13,979.78
  6. Step 6: Final answer
    x = 11,057.69

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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.