Home / 13,448.32-20,176-5,128.48

Finding the Fourth Proportional to 13,448.32, 20,176 and 5,128.48

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Solution

The fourth proportional to 13,448.32, 20,176 and 5,128.48 is: 7,694.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.32 : 20,176 = 5,128.48 : x
  2. Step 2: Convert to fraction form
    13,448.32/20,176 = 5,128.48/x
  3. Step 3: Cross multiply
    13,448.32x = 20,176 × 5,128.48
  4. Step 4: Simplify right side
    13,448.32x = 103,472,212.48
  5. Step 5: Solve for x
    x = 103,472,212.48/13,448.32
  6. Step 6: Final answer
    x = 7,694.06

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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.