Home / 11,905.64-16,426.45-9,379.91

Finding the Fourth Proportional to 11,905.64, 16,426.45 and 9,379.91

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Solution

The fourth proportional to 11,905.64, 16,426.45 and 9,379.91 is: 12,941.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.64 : 16,426.45 = 9,379.91 : x
  2. Step 2: Convert to fraction form
    11,905.64/16,426.45 = 9,379.91/x
  3. Step 3: Cross multiply
    11,905.64x = 16,426.45 × 9,379.91
  4. Step 4: Simplify right side
    11,905.64x = 154,078,540.49
  5. Step 5: Solve for x
    x = 154,078,540.49/11,905.64
  6. Step 6: Final answer
    x = 12,941.65

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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.