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Finding the Fourth Proportional to 18,787.86, 28,173.06 and 7,093.62

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Solution

The fourth proportional to 18,787.86, 28,173.06 and 7,093.62 is: 10,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.86 : 28,173.06 = 7,093.62 : x
  2. Step 2: Convert to fraction form
    18,787.86/28,173.06 = 7,093.62/x
  3. Step 3: Cross multiply
    18,787.86x = 28,173.06 × 7,093.62
  4. Step 4: Simplify right side
    18,787.86x = 199,848,981.88
  5. Step 5: Solve for x
    x = 199,848,981.88/18,787.86
  6. Step 6: Final answer
    x = 10,637.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.