Home / 13,125.76-19,707.60-8,696.80

Finding the Fourth Proportional to 13,125.76, 19,707.60 and 8,696.80

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Solution

The fourth proportional to 13,125.76, 19,707.60 and 8,696.80 is: 13,057.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.76 : 19,707.60 = 8,696.80 : x
  2. Step 2: Convert to fraction form
    13,125.76/19,707.60 = 8,696.80/x
  3. Step 3: Cross multiply
    13,125.76x = 19,707.60 × 8,696.80
  4. Step 4: Simplify right side
    13,125.76x = 171,393,055.68
  5. Step 5: Solve for x
    x = 171,393,055.68/13,125.76
  6. Step 6: Final answer
    x = 13,057.76

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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.