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Finding the Fourth Proportional to 18,754.96, 28,118.43 and 11,357.62

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Solution

The fourth proportional to 18,754.96, 28,118.43 and 11,357.62 is: 17,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.96 : 28,118.43 = 11,357.62 : x
  2. Step 2: Convert to fraction form
    18,754.96/28,118.43 = 11,357.62/x
  3. Step 3: Cross multiply
    18,754.96x = 28,118.43 × 11,357.62
  4. Step 4: Simplify right side
    18,754.96x = 319,358,442.94
  5. Step 5: Solve for x
    x = 319,358,442.94/18,754.96
  6. Step 6: Final answer
    x = 17,027.95

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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.