Home / 11,867.40-16,370.64-9,631.80

Finding the Fourth Proportional to 11,867.40, 16,370.64 and 9,631.80

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Solution

The fourth proportional to 11,867.40, 16,370.64 and 9,631.80 is: 13,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,867.40 : 16,370.64 = 9,631.80 : x
  2. Step 2: Convert to fraction form
    11,867.40/16,370.64 = 9,631.80/x
  3. Step 3: Cross multiply
    11,867.40x = 16,370.64 × 9,631.80
  4. Step 4: Simplify right side
    11,867.40x = 157,678,730.35
  5. Step 5: Solve for x
    x = 157,678,730.35/11,867.40
  6. Step 6: Final answer
    x = 13,286.71

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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.