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Finding the Fourth Proportional to 11,877.07, 17,821.81 and 8,617.07

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Solution

The fourth proportional to 11,877.07, 17,821.81 and 8,617.07 is: 12,930.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.07 : 17,821.81 = 8,617.07 : x
  2. Step 2: Convert to fraction form
    11,877.07/17,821.81 = 8,617.07/x
  3. Step 3: Cross multiply
    11,877.07x = 17,821.81 × 8,617.07
  4. Step 4: Simplify right side
    11,877.07x = 153,571,784.30
  5. Step 5: Solve for x
    x = 153,571,784.30/11,877.07
  6. Step 6: Final answer
    x = 12,930.11

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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.