Home / 12,515.29-18,794.37-11,112.86

Finding the Fourth Proportional to 12,515.29, 18,794.37 and 11,112.86

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Solution

The fourth proportional to 12,515.29, 18,794.37 and 11,112.86 is: 16,688.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.29 : 18,794.37 = 11,112.86 : x
  2. Step 2: Convert to fraction form
    12,515.29/18,794.37 = 11,112.86/x
  3. Step 3: Cross multiply
    12,515.29x = 18,794.37 × 11,112.86
  4. Step 4: Simplify right side
    12,515.29x = 208,859,202.60
  5. Step 5: Solve for x
    x = 208,859,202.60/12,515.29
  6. Step 6: Final answer
    x = 16,688.32

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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.