Home / 20,034.78-27,650.40-11,651.28

Finding the Fourth Proportional to 20,034.78, 27,650.40 and 11,651.28

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Solution

The fourth proportional to 20,034.78, 27,650.40 and 11,651.28 is: 16,080.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,034.78 : 27,650.40 = 11,651.28 : x
  2. Step 2: Convert to fraction form
    20,034.78/27,650.40 = 11,651.28/x
  3. Step 3: Cross multiply
    20,034.78x = 27,650.40 × 11,651.28
  4. Step 4: Simplify right side
    20,034.78x = 322,162,552.51
  5. Step 5: Solve for x
    x = 322,162,552.51/20,034.78
  6. Step 6: Final answer
    x = 16,080.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.