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Finding the Fourth Proportional to 18,913.38, 26,100.27 and 10,415.34

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Solution

The fourth proportional to 18,913.38, 26,100.27 and 10,415.34 is: 14,373.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.38 : 26,100.27 = 10,415.34 : x
  2. Step 2: Convert to fraction form
    18,913.38/26,100.27 = 10,415.34/x
  3. Step 3: Cross multiply
    18,913.38x = 26,100.27 × 10,415.34
  4. Step 4: Simplify right side
    18,913.38x = 271,843,186.14
  5. Step 5: Solve for x
    x = 271,843,186.14/18,913.38
  6. Step 6: Final answer
    x = 14,373.06

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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.