Home / 12,458.65-17,194.40-7,081.90

Finding the Fourth Proportional to 12,458.65, 17,194.40 and 7,081.90

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Solution

The fourth proportional to 12,458.65, 17,194.40 and 7,081.90 is: 9,773.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.65 : 17,194.40 = 7,081.90 : x
  2. Step 2: Convert to fraction form
    12,458.65/17,194.40 = 7,081.90/x
  3. Step 3: Cross multiply
    12,458.65x = 17,194.40 × 7,081.90
  4. Step 4: Simplify right side
    12,458.65x = 121,769,021.36
  5. Step 5: Solve for x
    x = 121,769,021.36/12,458.65
  6. Step 6: Final answer
    x = 9,773.85

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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.