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Finding the Fourth Proportional to 18,773.74, 28,164.66 and 5,627.26

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Solution

The fourth proportional to 18,773.74, 28,164.66 and 5,627.26 is: 8,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.74 : 28,164.66 = 5,627.26 : x
  2. Step 2: Convert to fraction form
    18,773.74/28,164.66 = 5,627.26/x
  3. Step 3: Cross multiply
    18,773.74x = 28,164.66 × 5,627.26
  4. Step 4: Simplify right side
    18,773.74x = 158,489,864.63
  5. Step 5: Solve for x
    x = 158,489,864.63/18,773.74
  6. Step 6: Final answer
    x = 8,442.10

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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.