Home / 13,720.55-20,574.75-4,955.54

Finding the Fourth Proportional to 13,720.55, 20,574.75 and 4,955.54

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Solution

The fourth proportional to 13,720.55, 20,574.75 and 4,955.54 is: 7,431.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.55 : 20,574.75 = 4,955.54 : x
  2. Step 2: Convert to fraction form
    13,720.55/20,574.75 = 4,955.54/x
  3. Step 3: Cross multiply
    13,720.55x = 20,574.75 × 4,955.54
  4. Step 4: Simplify right side
    13,720.55x = 101,958,996.62
  5. Step 5: Solve for x
    x = 101,958,996.62/13,720.55
  6. Step 6: Final answer
    x = 7,431.12

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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.