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Finding the Fourth Proportional to 8,682.15, 13,018.20 and 7,644.24

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Solution

The fourth proportional to 8,682.15, 13,018.20 and 7,644.24 is: 11,461.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.15 : 13,018.20 = 7,644.24 : x
  2. Step 2: Convert to fraction form
    8,682.15/13,018.20 = 7,644.24/x
  3. Step 3: Cross multiply
    8,682.15x = 13,018.20 × 7,644.24
  4. Step 4: Simplify right side
    8,682.15x = 99,514,167.68
  5. Step 5: Solve for x
    x = 99,514,167.68/8,682.15
  6. Step 6: Final answer
    x = 11,461.93

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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.