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Finding the Fourth Proportional to 12,404.21, 17,108.38 and 8,582.21

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Solution

The fourth proportional to 12,404.21, 17,108.38 and 8,582.21 is: 11,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.21 : 17,108.38 = 8,582.21 : x
  2. Step 2: Convert to fraction form
    12,404.21/17,108.38 = 8,582.21/x
  3. Step 3: Cross multiply
    12,404.21x = 17,108.38 × 8,582.21
  4. Step 4: Simplify right side
    12,404.21x = 146,827,602.92
  5. Step 5: Solve for x
    x = 146,827,602.92/12,404.21
  6. Step 6: Final answer
    x = 11,836.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.