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Finding the Fourth Proportional to 11,661.10, 17,491.65 and 8,404.90

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Solution

The fourth proportional to 11,661.10, 17,491.65 and 8,404.90 is: 12,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,661.10 : 17,491.65 = 8,404.90 : x
  2. Step 2: Convert to fraction form
    11,661.10/17,491.65 = 8,404.90/x
  3. Step 3: Cross multiply
    11,661.10x = 17,491.65 × 8,404.90
  4. Step 4: Simplify right side
    11,661.10x = 147,015,569.09
  5. Step 5: Solve for x
    x = 147,015,569.09/11,661.10
  6. Step 6: Final answer
    x = 12,607.35

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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.