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Finding the Fourth Proportional to 13,046.25, 18,003.30 and 7,077.69

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Solution

The fourth proportional to 13,046.25, 18,003.30 and 7,077.69 is: 9,766.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,046.25 : 18,003.30 = 7,077.69 : x
  2. Step 2: Convert to fraction form
    13,046.25/18,003.30 = 7,077.69/x
  3. Step 3: Cross multiply
    13,046.25x = 18,003.30 × 7,077.69
  4. Step 4: Simplify right side
    13,046.25x = 127,421,776.38
  5. Step 5: Solve for x
    x = 127,421,776.38/13,046.25
  6. Step 6: Final answer
    x = 9,766.93

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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.