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Finding the Fourth Proportional to 18,701.42, 28,051.58 and 4,850.42

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Solution

The fourth proportional to 18,701.42, 28,051.58 and 4,850.42 is: 7,275.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.42 : 28,051.58 = 4,850.42 : x
  2. Step 2: Convert to fraction form
    18,701.42/28,051.58 = 4,850.42/x
  3. Step 3: Cross multiply
    18,701.42x = 28,051.58 × 4,850.42
  4. Step 4: Simplify right side
    18,701.42x = 136,061,816.53
  5. Step 5: Solve for x
    x = 136,061,816.53/18,701.42
  6. Step 6: Final answer
    x = 7,275.48

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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.