Home / 13,120.70-19,670.81-8,950.37

Finding the Fourth Proportional to 13,120.70, 19,670.81 and 8,950.37

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Solution

The fourth proportional to 13,120.70, 19,670.81 and 8,950.37 is: 13,418.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.70 : 19,670.81 = 8,950.37 : x
  2. Step 2: Convert to fraction form
    13,120.70/19,670.81 = 8,950.37/x
  3. Step 3: Cross multiply
    13,120.70x = 19,670.81 × 8,950.37
  4. Step 4: Simplify right side
    13,120.70x = 176,060,884.59
  5. Step 5: Solve for x
    x = 176,060,884.59/13,120.70
  6. Step 6: Final answer
    x = 13,418.56

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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.