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Finding the Fourth Proportional to 13,086.62, 18,059.62 and 7,118.33

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Solution

The fourth proportional to 13,086.62, 18,059.62 and 7,118.33 is: 9,823.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.62 : 18,059.62 = 7,118.33 : x
  2. Step 2: Convert to fraction form
    13,086.62/18,059.62 = 7,118.33/x
  3. Step 3: Cross multiply
    13,086.62x = 18,059.62 × 7,118.33
  4. Step 4: Simplify right side
    13,086.62x = 128,554,334.83
  5. Step 5: Solve for x
    x = 128,554,334.83/13,086.62
  6. Step 6: Final answer
    x = 9,823.34

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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.