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Finding the Fourth Proportional to 19,377.92, 26,748.29 and 11,419.64

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Solution

The fourth proportional to 19,377.92, 26,748.29 and 11,419.64 is: 15,763.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,377.92 : 26,748.29 = 11,419.64 : x
  2. Step 2: Convert to fraction form
    19,377.92/26,748.29 = 11,419.64/x
  3. Step 3: Cross multiply
    19,377.92x = 26,748.29 × 11,419.64
  4. Step 4: Simplify right side
    19,377.92x = 305,455,852.19
  5. Step 5: Solve for x
    x = 305,455,852.19/19,377.92
  6. Step 6: Final answer
    x = 15,763.09

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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.