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Finding the Fourth Proportional to 18,967.44, 28,465.68 and 8,586.48

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Solution

The fourth proportional to 18,967.44, 28,465.68 and 8,586.48 is: 12,886.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.44 : 28,465.68 = 8,586.48 : x
  2. Step 2: Convert to fraction form
    18,967.44/28,465.68 = 8,586.48/x
  3. Step 3: Cross multiply
    18,967.44x = 28,465.68 × 8,586.48
  4. Step 4: Simplify right side
    18,967.44x = 244,419,992.01
  5. Step 5: Solve for x
    x = 244,419,992.01/18,967.44
  6. Step 6: Final answer
    x = 12,886.29

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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.