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Finding the Fourth Proportional to 18,787.03, 25,926.81 and 10,722

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Solution

The fourth proportional to 18,787.03, 25,926.81 and 10,722 is: 14,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.03 : 25,926.81 = 10,722 : x
  2. Step 2: Convert to fraction form
    18,787.03/25,926.81 = 10,722/x
  3. Step 3: Cross multiply
    18,787.03x = 25,926.81 × 10,722
  4. Step 4: Simplify right side
    18,787.03x = 277,987,256.82
  5. Step 5: Solve for x
    x = 277,987,256.82/18,787.03
  6. Step 6: Final answer
    x = 14,796.76

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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.