Home / 13,185.20-19,772.66-4,749.42

Finding the Fourth Proportional to 13,185.20, 19,772.66 and 4,749.42

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Solution

The fourth proportional to 13,185.20, 19,772.66 and 4,749.42 is: 7,122.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.20 : 19,772.66 = 4,749.42 : x
  2. Step 2: Convert to fraction form
    13,185.20/19,772.66 = 4,749.42/x
  3. Step 3: Cross multiply
    13,185.20x = 19,772.66 × 4,749.42
  4. Step 4: Simplify right side
    13,185.20x = 93,908,678.73
  5. Step 5: Solve for x
    x = 93,908,678.73/13,185.20
  6. Step 6: Final answer
    x = 7,122.28

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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.