Home / 13,928.44-19,221.25-7,640.81

Finding the Fourth Proportional to 13,928.44, 19,221.25 and 7,640.81

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Solution

The fourth proportional to 13,928.44, 19,221.25 and 7,640.81 is: 10,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.44 : 19,221.25 = 7,640.81 : x
  2. Step 2: Convert to fraction form
    13,928.44/19,221.25 = 7,640.81/x
  3. Step 3: Cross multiply
    13,928.44x = 19,221.25 × 7,640.81
  4. Step 4: Simplify right side
    13,928.44x = 146,865,948.16
  5. Step 5: Solve for x
    x = 146,865,948.16/13,928.44
  6. Step 6: Final answer
    x = 10,544.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.