Home / 12,828.64-19,240.80-5,039.68

Finding the Fourth Proportional to 12,828.64, 19,240.80 and 5,039.68

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Solution

The fourth proportional to 12,828.64, 19,240.80 and 5,039.68 is: 7,558.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828.64 : 19,240.80 = 5,039.68 : x
  2. Step 2: Convert to fraction form
    12,828.64/19,240.80 = 5,039.68/x
  3. Step 3: Cross multiply
    12,828.64x = 19,240.80 × 5,039.68
  4. Step 4: Simplify right side
    12,828.64x = 96,967,474.94
  5. Step 5: Solve for x
    x = 96,967,474.94/12,828.64
  6. Step 6: Final answer
    x = 7,558.67

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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.