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Finding the Fourth Proportional to 13,663.75, 18,852.74 and 7,694.23

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Solution

The fourth proportional to 13,663.75, 18,852.74 and 7,694.23 is: 10,616.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.75 : 18,852.74 = 7,694.23 : x
  2. Step 2: Convert to fraction form
    13,663.75/18,852.74 = 7,694.23/x
  3. Step 3: Cross multiply
    13,663.75x = 18,852.74 × 7,694.23
  4. Step 4: Simplify right side
    13,663.75x = 145,057,279.22
  5. Step 5: Solve for x
    x = 145,057,279.22/13,663.75
  6. Step 6: Final answer
    x = 10,616.21

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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.