Home / 11,953.12-17,928.60-3,187.75

Finding the Fourth Proportional to 11,953.12, 17,928.60 and 3,187.75

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Solution

The fourth proportional to 11,953.12, 17,928.60 and 3,187.75 is: 4,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,953.12 : 17,928.60 = 3,187.75 : x
  2. Step 2: Convert to fraction form
    11,953.12/17,928.60 = 3,187.75/x
  3. Step 3: Cross multiply
    11,953.12x = 17,928.60 × 3,187.75
  4. Step 4: Simplify right side
    11,953.12x = 57,151,894.65
  5. Step 5: Solve for x
    x = 57,151,894.65/11,953.12
  6. Step 6: Final answer
    x = 4,781.34

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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.