Home / 10,126.80-15,189.48-2,731.68

Finding the Fourth Proportional to 10,126.80, 15,189.48 and 2,731.68

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Solution

The fourth proportional to 10,126.80, 15,189.48 and 2,731.68 is: 4,097.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,126.80 : 15,189.48 = 2,731.68 : x
  2. Step 2: Convert to fraction form
    10,126.80/15,189.48 = 2,731.68/x
  3. Step 3: Cross multiply
    10,126.80x = 15,189.48 × 2,731.68
  4. Step 4: Simplify right side
    10,126.80x = 41,492,798.73
  5. Step 5: Solve for x
    x = 41,492,798.73/10,126.80
  6. Step 6: Final answer
    x = 4,097.33

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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.