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Finding the Fourth Proportional to 13,591.49, 18,755.76 and 7,623.03

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Solution

The fourth proportional to 13,591.49, 18,755.76 and 7,623.03 is: 10,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.49 : 18,755.76 = 7,623.03 : x
  2. Step 2: Convert to fraction form
    13,591.49/18,755.76 = 7,623.03/x
  3. Step 3: Cross multiply
    13,591.49x = 18,755.76 × 7,623.03
  4. Step 4: Simplify right side
    13,591.49x = 142,975,721.15
  5. Step 5: Solve for x
    x = 142,975,721.15/13,591.49
  6. Step 6: Final answer
    x = 10,519.51

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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.