Home / 19,838.11-27,376.59-11,340.42

Finding the Fourth Proportional to 19,838.11, 27,376.59 and 11,340.42

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Solution

The fourth proportional to 19,838.11, 27,376.59 and 11,340.42 is: 15,649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,838.11 : 27,376.59 = 11,340.42 : x
  2. Step 2: Convert to fraction form
    19,838.11/27,376.59 = 11,340.42/x
  3. Step 3: Cross multiply
    19,838.11x = 27,376.59 × 11,340.42
  4. Step 4: Simplify right side
    19,838.11x = 310,462,028.77
  5. Step 5: Solve for x
    x = 310,462,028.77/19,838.11
  6. Step 6: Final answer
    x = 15,649.78

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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.