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Finding the Fourth Proportional to 12,188.69, 18,276.48 and 6,263.13

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Solution

The fourth proportional to 12,188.69, 18,276.48 and 6,263.13 is: 9,391.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.69 : 18,276.48 = 6,263.13 : x
  2. Step 2: Convert to fraction form
    12,188.69/18,276.48 = 6,263.13/x
  3. Step 3: Cross multiply
    12,188.69x = 18,276.48 × 6,263.13
  4. Step 4: Simplify right side
    12,188.69x = 114,467,970.18
  5. Step 5: Solve for x
    x = 114,467,970.18/12,188.69
  6. Step 6: Final answer
    x = 9,391.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.