Home / 19,917.11-27,485.80-10,964.81

Finding the Fourth Proportional to 19,917.11, 27,485.80 and 10,964.81

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Solution

The fourth proportional to 19,917.11, 27,485.80 and 10,964.81 is: 15,131.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.11 : 27,485.80 = 10,964.81 : x
  2. Step 2: Convert to fraction form
    19,917.11/27,485.80 = 10,964.81/x
  3. Step 3: Cross multiply
    19,917.11x = 27,485.80 × 10,964.81
  4. Step 4: Simplify right side
    19,917.11x = 301,376,616.00
  5. Step 5: Solve for x
    x = 301,376,616.00/19,917.11
  6. Step 6: Final answer
    x = 15,131.54

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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.