Home / 11,913.39-16,440.45-6,609

Finding the Fourth Proportional to 11,913.39, 16,440.45 and 6,609

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Solution

The fourth proportional to 11,913.39, 16,440.45 and 6,609 is: 9,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.39 : 16,440.45 = 6,609 : x
  2. Step 2: Convert to fraction form
    11,913.39/16,440.45 = 6,609/x
  3. Step 3: Cross multiply
    11,913.39x = 16,440.45 × 6,609
  4. Step 4: Simplify right side
    11,913.39x = 108,654,934.05
  5. Step 5: Solve for x
    x = 108,654,934.05/11,913.39
  6. Step 6: Final answer
    x = 9,120.40

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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.