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Finding the Fourth Proportional to 13,516.48, 18,642.48 and 11,631.22

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Solution

The fourth proportional to 13,516.48, 18,642.48 and 11,631.22 is: 16,042.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.48 : 18,642.48 = 11,631.22 : x
  2. Step 2: Convert to fraction form
    13,516.48/18,642.48 = 11,631.22/x
  3. Step 3: Cross multiply
    13,516.48x = 18,642.48 × 11,631.22
  4. Step 4: Simplify right side
    13,516.48x = 216,834,786.23
  5. Step 5: Solve for x
    x = 216,834,786.23/13,516.48
  6. Step 6: Final answer
    x = 16,042.25

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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.