Home / 13,147.98-18,144.48-7,179.90

Finding the Fourth Proportional to 13,147.98, 18,144.48 and 7,179.90

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Solution

The fourth proportional to 13,147.98, 18,144.48 and 7,179.90 is: 9,908.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.98 : 18,144.48 = 7,179.90 : x
  2. Step 2: Convert to fraction form
    13,147.98/18,144.48 = 7,179.90/x
  3. Step 3: Cross multiply
    13,147.98x = 18,144.48 × 7,179.90
  4. Step 4: Simplify right side
    13,147.98x = 130,275,551.95
  5. Step 5: Solve for x
    x = 130,275,551.95/13,147.98
  6. Step 6: Final answer
    x = 9,908.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.