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Finding the Fourth Proportional to 13,661.39, 18,852.54 and 7,693.13

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Solution

The fourth proportional to 13,661.39, 18,852.54 and 7,693.13 is: 10,616.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.39 : 18,852.54 = 7,693.13 : x
  2. Step 2: Convert to fraction form
    13,661.39/18,852.54 = 7,693.13/x
  3. Step 3: Cross multiply
    13,661.39x = 18,852.54 × 7,693.13
  4. Step 4: Simplify right side
    13,661.39x = 145,035,059.33
  5. Step 5: Solve for x
    x = 145,035,059.33/13,661.39
  6. Step 6: Final answer
    x = 10,616.42

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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.