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Finding the Fourth Proportional to 18,433.60, 27,647.70 and 5,284.60

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Solution

The fourth proportional to 18,433.60, 27,647.70 and 5,284.60 is: 7,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,433.60 : 27,647.70 = 5,284.60 : x
  2. Step 2: Convert to fraction form
    18,433.60/27,647.70 = 5,284.60/x
  3. Step 3: Cross multiply
    18,433.60x = 27,647.70 × 5,284.60
  4. Step 4: Simplify right side
    18,433.60x = 146,107,035.42
  5. Step 5: Solve for x
    x = 146,107,035.42/18,433.60
  6. Step 6: Final answer
    x = 7,926.13

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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.