Home / 28,720.76-43,055.55-11,186.55

Finding the Fourth Proportional to 28,720.76, 43,055.55 and 11,186.55

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Solution

The fourth proportional to 28,720.76, 43,055.55 and 11,186.55 is: 16,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.76 : 43,055.55 = 11,186.55 : x
  2. Step 2: Convert to fraction form
    28,720.76/43,055.55 = 11,186.55/x
  3. Step 3: Cross multiply
    28,720.76x = 43,055.55 × 11,186.55
  4. Step 4: Simplify right side
    28,720.76x = 481,643,062.85
  5. Step 5: Solve for x
    x = 481,643,062.85/28,720.76
  6. Step 6: Final answer
    x = 16,769.86

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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.