Home / 13,131.76-19,695.54-4,815.70

Finding the Fourth Proportional to 13,131.76, 19,695.54 and 4,815.70

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Solution

The fourth proportional to 13,131.76, 19,695.54 and 4,815.70 is: 7,222.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.76 : 19,695.54 = 4,815.70 : x
  2. Step 2: Convert to fraction form
    13,131.76/19,695.54 = 4,815.70/x
  3. Step 3: Cross multiply
    13,131.76x = 19,695.54 × 4,815.70
  4. Step 4: Simplify right side
    13,131.76x = 94,847,811.98
  5. Step 5: Solve for x
    x = 94,847,811.98/13,131.76
  6. Step 6: Final answer
    x = 7,222.78

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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.