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Finding the Fourth Proportional to 13,791.71, 18,899.99 and 12,463.11

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Solution

The fourth proportional to 13,791.71, 18,899.99 and 12,463.11 is: 17,079.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.71 : 18,899.99 = 12,463.11 : x
  2. Step 2: Convert to fraction form
    13,791.71/18,899.99 = 12,463.11/x
  3. Step 3: Cross multiply
    13,791.71x = 18,899.99 × 12,463.11
  4. Step 4: Simplify right side
    13,791.71x = 235,552,638.79
  5. Step 5: Solve for x
    x = 235,552,638.79/13,791.71
  6. Step 6: Final answer
    x = 17,079.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.