Home / 11,129.36-16,694.58-9,178

Finding the Fourth Proportional to 11,129.36, 16,694.58 and 9,178

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Solution

The fourth proportional to 11,129.36, 16,694.58 and 9,178 is: 13,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.36 : 16,694.58 = 9,178 : x
  2. Step 2: Convert to fraction form
    11,129.36/16,694.58 = 9,178/x
  3. Step 3: Cross multiply
    11,129.36x = 16,694.58 × 9,178
  4. Step 4: Simplify right side
    11,129.36x = 153,222,855.24
  5. Step 5: Solve for x
    x = 153,222,855.24/11,129.36
  6. Step 6: Final answer
    x = 13,767.45

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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.