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Finding the Fourth Proportional to 18,878.01, 26,051.09 and 10,380.14

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Solution

The fourth proportional to 18,878.01, 26,051.09 and 10,380.14 is: 14,324.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.01 : 26,051.09 = 10,380.14 : x
  2. Step 2: Convert to fraction form
    18,878.01/26,051.09 = 10,380.14/x
  3. Step 3: Cross multiply
    18,878.01x = 26,051.09 × 10,380.14
  4. Step 4: Simplify right side
    18,878.01x = 270,413,961.35
  5. Step 5: Solve for x
    x = 270,413,961.35/18,878.01
  6. Step 6: Final answer
    x = 14,324.28

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1.5x scale

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.