Home / 13,825.40-20,735.70-5,055.80

Finding the Fourth Proportional to 13,825.40, 20,735.70 and 5,055.80

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Solution

The fourth proportional to 13,825.40, 20,735.70 and 5,055.80 is: 7,582.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.40 : 20,735.70 = 5,055.80 : x
  2. Step 2: Convert to fraction form
    13,825.40/20,735.70 = 5,055.80/x
  3. Step 3: Cross multiply
    13,825.40x = 20,735.70 × 5,055.80
  4. Step 4: Simplify right side
    13,825.40x = 104,835,552.06
  5. Step 5: Solve for x
    x = 104,835,552.06/13,825.40
  6. Step 6: Final answer
    x = 7,582.82

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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.