Home / 13,140.86-19,713.52-5,745.16

Finding the Fourth Proportional to 13,140.86, 19,713.52 and 5,745.16

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Solution

The fourth proportional to 13,140.86, 19,713.52 and 5,745.16 is: 8,618.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.86 : 19,713.52 = 5,745.16 : x
  2. Step 2: Convert to fraction form
    13,140.86/19,713.52 = 5,745.16/x
  3. Step 3: Cross multiply
    13,140.86x = 19,713.52 × 5,745.16
  4. Step 4: Simplify right side
    13,140.86x = 113,257,228.00
  5. Step 5: Solve for x
    x = 113,257,228.00/13,140.86
  6. Step 6: Final answer
    x = 8,618.71

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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.