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Finding the Fourth Proportional to 18,607.56, 27,915.17 and 6,128.33

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Solution

The fourth proportional to 18,607.56, 27,915.17 and 6,128.33 is: 9,193.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.56 : 27,915.17 = 6,128.33 : x
  2. Step 2: Convert to fraction form
    18,607.56/27,915.17 = 6,128.33/x
  3. Step 3: Cross multiply
    18,607.56x = 27,915.17 × 6,128.33
  4. Step 4: Simplify right side
    18,607.56x = 171,073,203.55
  5. Step 5: Solve for x
    x = 171,073,203.55/18,607.56
  6. Step 6: Final answer
    x = 9,193.75

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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.