Home / 18,769.12-28,159.64-11,753.64

Finding the Fourth Proportional to 18,769.12, 28,159.64 and 11,753.64

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Solution

The fourth proportional to 18,769.12, 28,159.64 and 11,753.64 is: 17,634.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,769.12 : 28,159.64 = 11,753.64 : x
  2. Step 2: Convert to fraction form
    18,769.12/28,159.64 = 11,753.64/x
  3. Step 3: Cross multiply
    18,769.12x = 28,159.64 × 11,753.64
  4. Step 4: Simplify right side
    18,769.12x = 330,978,271.09
  5. Step 5: Solve for x
    x = 330,978,271.09/18,769.12
  6. Step 6: Final answer
    x = 17,634.19

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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.