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Finding the Fourth Proportional to 18,133.76, 27,180.80 and 7,751.68

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Solution

The fourth proportional to 18,133.76, 27,180.80 and 7,751.68 is: 11,619.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,133.76 : 27,180.80 = 7,751.68 : x
  2. Step 2: Convert to fraction form
    18,133.76/27,180.80 = 7,751.68/x
  3. Step 3: Cross multiply
    18,133.76x = 27,180.80 × 7,751.68
  4. Step 4: Simplify right side
    18,133.76x = 210,696,863.74
  5. Step 5: Solve for x
    x = 210,696,863.74/18,133.76
  6. Step 6: Final answer
    x = 11,619.04

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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.