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Finding the Fourth Proportional to 11,609.59, 16,021.55 and 6,829.87

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Solution

The fourth proportional to 11,609.59, 16,021.55 and 6,829.87 is: 9,425.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,609.59 : 16,021.55 = 6,829.87 : x
  2. Step 2: Convert to fraction form
    11,609.59/16,021.55 = 6,829.87/x
  3. Step 3: Cross multiply
    11,609.59x = 16,021.55 × 6,829.87
  4. Step 4: Simplify right side
    11,609.59x = 109,424,989.44
  5. Step 5: Solve for x
    x = 109,424,989.44/11,609.59
  6. Step 6: Final answer
    x = 9,425.40

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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.