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Finding the Fourth Proportional to 18,003.18, 27,002.04 and 6,915.09

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Solution

The fourth proportional to 18,003.18, 27,002.04 and 6,915.09 is: 10,371.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,003.18 : 27,002.04 = 6,915.09 : x
  2. Step 2: Convert to fraction form
    18,003.18/27,002.04 = 6,915.09/x
  3. Step 3: Cross multiply
    18,003.18x = 27,002.04 × 6,915.09
  4. Step 4: Simplify right side
    18,003.18x = 186,721,536.78
  5. Step 5: Solve for x
    x = 186,721,536.78/18,003.18
  6. Step 6: Final answer
    x = 10,371.59

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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.