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Finding the Fourth Proportional to 17,606.89, 26,410.88 and 5,128.30

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Solution

The fourth proportional to 17,606.89, 26,410.88 and 5,128.30 is: 7,692.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,606.89 : 26,410.88 = 5,128.30 : x
  2. Step 2: Convert to fraction form
    17,606.89/26,410.88 = 5,128.30/x
  3. Step 3: Cross multiply
    17,606.89x = 26,410.88 × 5,128.30
  4. Step 4: Simplify right side
    17,606.89x = 135,442,915.90
  5. Step 5: Solve for x
    x = 135,442,915.90/17,606.89
  6. Step 6: Final answer
    x = 7,692.61

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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.