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Finding the Fourth Proportional to 18,767.64, 25,901.12 and 11,214

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Solution

The fourth proportional to 18,767.64, 25,901.12 and 11,214 is: 15,476.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.64 : 25,901.12 = 11,214 : x
  2. Step 2: Convert to fraction form
    18,767.64/25,901.12 = 11,214/x
  3. Step 3: Cross multiply
    18,767.64x = 25,901.12 × 11,214
  4. Step 4: Simplify right side
    18,767.64x = 290,455,159.68
  5. Step 5: Solve for x
    x = 290,455,159.68/18,767.64
  6. Step 6: Final answer
    x = 15,476.38

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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.