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Finding the Fourth Proportional to 18,009.22, 27,017.84 and 6,915.94

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Solution

The fourth proportional to 18,009.22, 27,017.84 and 6,915.94 is: 10,375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.22 : 27,017.84 = 6,915.94 : x
  2. Step 2: Convert to fraction form
    18,009.22/27,017.84 = 6,915.94/x
  3. Step 3: Cross multiply
    18,009.22x = 27,017.84 × 6,915.94
  4. Step 4: Simplify right side
    18,009.22x = 186,853,760.37
  5. Step 5: Solve for x
    x = 186,853,760.37/18,009.22
  6. Step 6: Final answer
    x = 10,375.45

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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.