Home / 18,748.56-28,114.19-6,899.36

Finding the Fourth Proportional to 18,748.56, 28,114.19 and 6,899.36

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Solution

The fourth proportional to 18,748.56, 28,114.19 and 6,899.36 is: 10,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.56 : 28,114.19 = 6,899.36 : x
  2. Step 2: Convert to fraction form
    18,748.56/28,114.19 = 6,899.36/x
  3. Step 3: Cross multiply
    18,748.56x = 28,114.19 × 6,899.36
  4. Step 4: Simplify right side
    18,748.56x = 193,969,926.87
  5. Step 5: Solve for x
    x = 193,969,926.87/18,748.56
  6. Step 6: Final answer
    x = 10,345.86

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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.