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Finding the Fourth Proportional to 19,240, 26,551.84 and 11,173.04

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Solution

The fourth proportional to 19,240, 26,551.84 and 11,173.04 is: 15,419.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,240 : 26,551.84 = 11,173.04 : x
  2. Step 2: Convert to fraction form
    19,240/26,551.84 = 11,173.04/x
  3. Step 3: Cross multiply
    19,240x = 26,551.84 × 11,173.04
  4. Step 4: Simplify right side
    19,240x = 296,664,770.39
  5. Step 5: Solve for x
    x = 296,664,770.39/19,240
  6. Step 6: Final answer
    x = 15,419.17

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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.