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Finding the Fourth Proportional to 18,616.91, 27,913.01 and 13,076.91

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Solution

The fourth proportional to 18,616.91, 27,913.01 and 13,076.91 is: 19,606.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.91 : 27,913.01 = 13,076.91 : x
  2. Step 2: Convert to fraction form
    18,616.91/27,913.01 = 13,076.91/x
  3. Step 3: Cross multiply
    18,616.91x = 27,913.01 × 13,076.91
  4. Step 4: Simplify right side
    18,616.91x = 365,015,854.21
  5. Step 5: Solve for x
    x = 365,015,854.21/18,616.91
  6. Step 6: Final answer
    x = 19,606.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.