Home / 13,367.07-18,451.41-7,778.07

Finding the Fourth Proportional to 13,367.07, 18,451.41 and 7,778.07

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Solution

The fourth proportional to 13,367.07, 18,451.41 and 7,778.07 is: 10,736.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,367.07 : 18,451.41 = 7,778.07 : x
  2. Step 2: Convert to fraction form
    13,367.07/18,451.41 = 7,778.07/x
  3. Step 3: Cross multiply
    13,367.07x = 18,451.41 × 7,778.07
  4. Step 4: Simplify right side
    13,367.07x = 143,516,358.58
  5. Step 5: Solve for x
    x = 143,516,358.58/13,367.07
  6. Step 6: Final answer
    x = 10,736.56

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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.