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Finding the Fourth Proportional to 11,308.86, 16,955.09 and 7,601.90

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Solution

The fourth proportional to 11,308.86, 16,955.09 and 7,601.90 is: 11,397.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,308.86 : 16,955.09 = 7,601.90 : x
  2. Step 2: Convert to fraction form
    11,308.86/16,955.09 = 7,601.90/x
  3. Step 3: Cross multiply
    11,308.86x = 16,955.09 × 7,601.90
  4. Step 4: Simplify right side
    11,308.86x = 128,890,875.29
  5. Step 5: Solve for x
    x = 128,890,875.29/11,308.86
  6. Step 6: Final answer
    x = 11,397.33

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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.