Home / 13,975.89-20,957.69-7,400.54

Finding the Fourth Proportional to 13,975.89, 20,957.69 and 7,400.54

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Solution

The fourth proportional to 13,975.89, 20,957.69 and 7,400.54 is: 11,097.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.89 : 20,957.69 = 7,400.54 : x
  2. Step 2: Convert to fraction form
    13,975.89/20,957.69 = 7,400.54/x
  3. Step 3: Cross multiply
    13,975.89x = 20,957.69 × 7,400.54
  4. Step 4: Simplify right side
    13,975.89x = 155,098,193.48
  5. Step 5: Solve for x
    x = 155,098,193.48/13,975.89
  6. Step 6: Final answer
    x = 11,097.55

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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.