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Finding the Fourth Proportional to 13,274.97, 19,868.72 and 11,816.97

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Solution

The fourth proportional to 13,274.97, 19,868.72 and 11,816.97 is: 17,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,274.97 : 19,868.72 = 11,816.97 : x
  2. Step 2: Convert to fraction form
    13,274.97/19,868.72 = 11,816.97/x
  3. Step 3: Cross multiply
    13,274.97x = 19,868.72 × 11,816.97
  4. Step 4: Simplify right side
    13,274.97x = 234,788,009.09
  5. Step 5: Solve for x
    x = 234,788,009.09/13,274.97
  6. Step 6: Final answer
    x = 17,686.52

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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.