Home / 13,110.54-19,620.57-8,110.86

Finding the Fourth Proportional to 13,110.54, 19,620.57 and 8,110.86

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Solution

The fourth proportional to 13,110.54, 19,620.57 and 8,110.86 is: 12,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.54 : 19,620.57 = 8,110.86 : x
  2. Step 2: Convert to fraction form
    13,110.54/19,620.57 = 8,110.86/x
  3. Step 3: Cross multiply
    13,110.54x = 19,620.57 × 8,110.86
  4. Step 4: Simplify right side
    13,110.54x = 159,139,696.39
  5. Step 5: Solve for x
    x = 159,139,696.39/13,110.54
  6. Step 6: Final answer
    x = 12,138.30

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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.