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Finding the Fourth Proportional to 13,053.08, 18,013.38 and 7,084.80

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Solution

The fourth proportional to 13,053.08, 18,013.38 and 7,084.80 is: 9,777.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.08 : 18,013.38 = 7,084.80 : x
  2. Step 2: Convert to fraction form
    13,053.08/18,013.38 = 7,084.80/x
  3. Step 3: Cross multiply
    13,053.08x = 18,013.38 × 7,084.80
  4. Step 4: Simplify right side
    13,053.08x = 127,621,194.62
  5. Step 5: Solve for x
    x = 127,621,194.62/13,053.08
  6. Step 6: Final answer
    x = 9,777.09

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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.