Home / 18,664.82-27,931.45-11,648.13

Finding the Fourth Proportional to 18,664.82, 27,931.45 and 11,648.13

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Solution

The fourth proportional to 18,664.82, 27,931.45 and 11,648.13 is: 17,431.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.82 : 27,931.45 = 11,648.13 : x
  2. Step 2: Convert to fraction form
    18,664.82/27,931.45 = 11,648.13/x
  3. Step 3: Cross multiply
    18,664.82x = 27,931.45 × 11,648.13
  4. Step 4: Simplify right side
    18,664.82x = 325,349,078.08
  5. Step 5: Solve for x
    x = 325,349,078.08/18,664.82
  6. Step 6: Final answer
    x = 17,431.14

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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.