Home / 13,903.72-20,855.56-3,515.48

Finding the Fourth Proportional to 13,903.72, 20,855.56 and 3,515.48

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Solution

The fourth proportional to 13,903.72, 20,855.56 and 3,515.48 is: 5,273.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.72 : 20,855.56 = 3,515.48 : x
  2. Step 2: Convert to fraction form
    13,903.72/20,855.56 = 3,515.48/x
  3. Step 3: Cross multiply
    13,903.72x = 20,855.56 × 3,515.48
  4. Step 4: Simplify right side
    13,903.72x = 73,317,304.07
  5. Step 5: Solve for x
    x = 73,317,304.07/13,903.72
  6. Step 6: Final answer
    x = 5,273.21

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1.5x scale

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.