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Finding the Fourth Proportional to 13,012, 17,951.66 and 8,538.22

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Solution

The fourth proportional to 13,012, 17,951.66 and 8,538.22 is: 11,779.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012 : 17,951.66 = 8,538.22 : x
  2. Step 2: Convert to fraction form
    13,012/17,951.66 = 8,538.22/x
  3. Step 3: Cross multiply
    13,012x = 17,951.66 × 8,538.22
  4. Step 4: Simplify right side
    13,012x = 153,275,222.45
  5. Step 5: Solve for x
    x = 153,275,222.45/13,012
  6. Step 6: Final answer
    x = 11,779.53

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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.