Home / 13,149.06-18,145.94-7,180.98

Finding the Fourth Proportional to 13,149.06, 18,145.94 and 7,180.98

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Solution

The fourth proportional to 13,149.06, 18,145.94 and 7,180.98 is: 9,909.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.06 : 18,145.94 = 7,180.98 : x
  2. Step 2: Convert to fraction form
    13,149.06/18,145.94 = 7,180.98/x
  3. Step 3: Cross multiply
    13,149.06x = 18,145.94 × 7,180.98
  4. Step 4: Simplify right side
    13,149.06x = 130,305,596.32
  5. Step 5: Solve for x
    x = 130,305,596.32/13,149.06
  6. Step 6: Final answer
    x = 9,909.88

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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.