Home / 11,128.44-15,356.20-6,651.30

Finding the Fourth Proportional to 11,128.44, 15,356.20 and 6,651.30

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Solution

The fourth proportional to 11,128.44, 15,356.20 and 6,651.30 is: 9,178.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.44 : 15,356.20 = 6,651.30 : x
  2. Step 2: Convert to fraction form
    11,128.44/15,356.20 = 6,651.30/x
  3. Step 3: Cross multiply
    11,128.44x = 15,356.20 × 6,651.30
  4. Step 4: Simplify right side
    11,128.44x = 102,138,693.06
  5. Step 5: Solve for x
    x = 102,138,693.06/11,128.44
  6. Step 6: Final answer
    x = 9,178.17

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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.