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Finding the Fourth Proportional to 17,520.64, 26,289.16 and 7,658.64

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Solution

The fourth proportional to 17,520.64, 26,289.16 and 7,658.64 is: 11,491.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,520.64 : 26,289.16 = 7,658.64 : x
  2. Step 2: Convert to fraction form
    17,520.64/26,289.16 = 7,658.64/x
  3. Step 3: Cross multiply
    17,520.64x = 26,289.16 × 7,658.64
  4. Step 4: Simplify right side
    17,520.64x = 201,339,193.20
  5. Step 5: Solve for x
    x = 201,339,193.20/17,520.64
  6. Step 6: Final answer
    x = 11,491.54

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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.