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Finding the Fourth Proportional to 13,104.76, 18,084.96 and 7,515.76

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Solution

The fourth proportional to 13,104.76, 18,084.96 and 7,515.76 is: 10,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.76 : 18,084.96 = 7,515.76 : x
  2. Step 2: Convert to fraction form
    13,104.76/18,084.96 = 7,515.76/x
  3. Step 3: Cross multiply
    13,104.76x = 18,084.96 × 7,515.76
  4. Step 4: Simplify right side
    13,104.76x = 135,922,218.97
  5. Step 5: Solve for x
    x = 135,922,218.97/13,104.76
  6. Step 6: Final answer
    x = 10,371.97

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1.5x scale

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.