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Finding the Fourth Proportional to 18,109.64, 27,153.48 and 7,006.97

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Solution

The fourth proportional to 18,109.64, 27,153.48 and 7,006.97 is: 10,506.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.64 : 27,153.48 = 7,006.97 : x
  2. Step 2: Convert to fraction form
    18,109.64/27,153.48 = 7,006.97/x
  3. Step 3: Cross multiply
    18,109.64x = 27,153.48 × 7,006.97
  4. Step 4: Simplify right side
    18,109.64x = 190,263,619.76
  5. Step 5: Solve for x
    x = 190,263,619.76/18,109.64
  6. Step 6: Final answer
    x = 10,506.21

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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.