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Finding the Fourth Proportional to 11,809.31, 17,693.07 and 11,106.89

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Solution

The fourth proportional to 11,809.31, 17,693.07 and 11,106.89 is: 16,640.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,809.31 : 17,693.07 = 11,106.89 : x
  2. Step 2: Convert to fraction form
    11,809.31/17,693.07 = 11,106.89/x
  3. Step 3: Cross multiply
    11,809.31x = 17,693.07 × 11,106.89
  4. Step 4: Simplify right side
    11,809.31x = 196,514,893.79
  5. Step 5: Solve for x
    x = 196,514,893.79/11,809.31
  6. Step 6: Final answer
    x = 16,640.68

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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.