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Finding the Fourth Proportional to 18,778.80, 25,917.06 and 10,714.44

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Solution

The fourth proportional to 18,778.80, 25,917.06 and 10,714.44 is: 14,787.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.80 : 25,917.06 = 10,714.44 : x
  2. Step 2: Convert to fraction form
    18,778.80/25,917.06 = 10,714.44/x
  3. Step 3: Cross multiply
    18,778.80x = 25,917.06 × 10,714.44
  4. Step 4: Simplify right side
    18,778.80x = 277,686,784.35
  5. Step 5: Solve for x
    x = 277,686,784.35/18,778.80
  6. Step 6: Final answer
    x = 14,787.25

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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.