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Finding the Fourth Proportional to 18,902.51, 28,356.51 and 5,754.54

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Solution

The fourth proportional to 18,902.51, 28,356.51 and 5,754.54 is: 8,632.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.51 : 28,356.51 = 5,754.54 : x
  2. Step 2: Convert to fraction form
    18,902.51/28,356.51 = 5,754.54/x
  3. Step 3: Cross multiply
    18,902.51x = 28,356.51 × 5,754.54
  4. Step 4: Simplify right side
    18,902.51x = 163,178,750.42
  5. Step 5: Solve for x
    x = 163,178,750.42/18,902.51
  6. Step 6: Final answer
    x = 8,632.65

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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.