Home / 11,270.30-15,565.77-7,679.03

Finding the Fourth Proportional to 11,270.30, 15,565.77 and 7,679.03

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Solution

The fourth proportional to 11,270.30, 15,565.77 and 7,679.03 is: 10,605.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,270.30 : 15,565.77 = 7,679.03 : x
  2. Step 2: Convert to fraction form
    11,270.30/15,565.77 = 7,679.03/x
  3. Step 3: Cross multiply
    11,270.30x = 15,565.77 × 7,679.03
  4. Step 4: Simplify right side
    11,270.30x = 119,529,936.97
  5. Step 5: Solve for x
    x = 119,529,936.97/11,270.30
  6. Step 6: Final answer
    x = 10,605.75

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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.