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Finding the Fourth Proportional to 11,963.86, 17,888.81 and 10,918.19

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Solution

The fourth proportional to 11,963.86, 17,888.81 and 10,918.19 is: 16,325.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,963.86 : 17,888.81 = 10,918.19 : x
  2. Step 2: Convert to fraction form
    11,963.86/17,888.81 = 10,918.19/x
  3. Step 3: Cross multiply
    11,963.86x = 17,888.81 × 10,918.19
  4. Step 4: Simplify right side
    11,963.86x = 195,313,416.58
  5. Step 5: Solve for x
    x = 195,313,416.58/11,963.86
  6. Step 6: Final answer
    x = 16,325.29

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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.