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Finding the Fourth Proportional to 18,754.14, 28,145.06 and 8,893.45

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Solution

The fourth proportional to 18,754.14, 28,145.06 and 8,893.45 is: 13,346.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.14 : 28,145.06 = 8,893.45 : x
  2. Step 2: Convert to fraction form
    18,754.14/28,145.06 = 8,893.45/x
  3. Step 3: Cross multiply
    18,754.14x = 28,145.06 × 8,893.45
  4. Step 4: Simplify right side
    18,754.14x = 250,306,683.86
  5. Step 5: Solve for x
    x = 250,306,683.86/18,754.14
  6. Step 6: Final answer
    x = 13,346.74

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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.