Home / 13,120.94-18,106.00-7,379.26

Finding the Fourth Proportional to 13,120.94, 18,106.00 and 7,379.26

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Solution

The fourth proportional to 13,120.94, 18,106.00 and 7,379.26 is: 10,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.94 : 18,106.00 = 7,379.26 : x
  2. Step 2: Convert to fraction form
    13,120.94/18,106.00 = 7,379.26/x
  3. Step 3: Cross multiply
    13,120.94x = 18,106.00 × 7,379.26
  4. Step 4: Simplify right side
    13,120.94x = 133,608,754.13
  5. Step 5: Solve for x
    x = 133,608,754.13/13,120.94
  6. Step 6: Final answer
    x = 10,182.86

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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.