Home / 11,816.34-16,308.35-8,979.09

Finding the Fourth Proportional to 11,816.34, 16,308.35 and 8,979.09

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Solution

The fourth proportional to 11,816.34, 16,308.35 and 8,979.09 is: 12,392.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.34 : 16,308.35 = 8,979.09 : x
  2. Step 2: Convert to fraction form
    11,816.34/16,308.35 = 8,979.09/x
  3. Step 3: Cross multiply
    11,816.34x = 16,308.35 × 8,979.09
  4. Step 4: Simplify right side
    11,816.34x = 146,434,142.40
  5. Step 5: Solve for x
    x = 146,434,142.40/11,816.34
  6. Step 6: Final answer
    x = 12,392.51

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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.