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Finding the Fourth Proportional to 18,282.60, 27,415.80 and 8,424.90

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Solution

The fourth proportional to 18,282.60, 27,415.80 and 8,424.90 is: 12,633.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,282.60 : 27,415.80 = 8,424.90 : x
  2. Step 2: Convert to fraction form
    18,282.60/27,415.80 = 8,424.90/x
  3. Step 3: Cross multiply
    18,282.60x = 27,415.80 × 8,424.90
  4. Step 4: Simplify right side
    18,282.60x = 230,975,373.42
  5. Step 5: Solve for x
    x = 230,975,373.42/18,282.60
  6. Step 6: Final answer
    x = 12,633.62

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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.