Home / 18,726.06-28,089.69-8,190.66

Finding the Fourth Proportional to 18,726.06, 28,089.69 and 8,190.66

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Solution

The fourth proportional to 18,726.06, 28,089.69 and 8,190.66 is: 12,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.06 : 28,089.69 = 8,190.66 : x
  2. Step 2: Convert to fraction form
    18,726.06/28,089.69 = 8,190.66/x
  3. Step 3: Cross multiply
    18,726.06x = 28,089.69 × 8,190.66
  4. Step 4: Simplify right side
    18,726.06x = 230,073,100.30
  5. Step 5: Solve for x
    x = 230,073,100.30/18,726.06
  6. Step 6: Final answer
    x = 12,286.25

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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.