Home / 13,504.85-20,257.23-5,180.31

Finding the Fourth Proportional to 13,504.85, 20,257.23 and 5,180.31

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Solution

The fourth proportional to 13,504.85, 20,257.23 and 5,180.31 is: 7,770.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,504.85 : 20,257.23 = 5,180.31 : x
  2. Step 2: Convert to fraction form
    13,504.85/20,257.23 = 5,180.31/x
  3. Step 3: Cross multiply
    13,504.85x = 20,257.23 × 5,180.31
  4. Step 4: Simplify right side
    13,504.85x = 104,938,731.14
  5. Step 5: Solve for x
    x = 104,938,731.14/13,504.85
  6. Step 6: Final answer
    x = 7,770.45

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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.