Home / 13,871.46-19,146-11,629.78

Finding the Fourth Proportional to 13,871.46, 19,146 and 11,629.78

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Solution

The fourth proportional to 13,871.46, 19,146 and 11,629.78 is: 16,051.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.46 : 19,146 = 11,629.78 : x
  2. Step 2: Convert to fraction form
    13,871.46/19,146 = 11,629.78/x
  3. Step 3: Cross multiply
    13,871.46x = 19,146 × 11,629.78
  4. Step 4: Simplify right side
    13,871.46x = 222,663,767.88
  5. Step 5: Solve for x
    x = 222,663,767.88/13,871.46
  6. Step 6: Final answer
    x = 16,051.93

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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.