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Finding the Fourth Proportional to 18,283.96, 27,405.20 and 8,402.82

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Solution

The fourth proportional to 18,283.96, 27,405.20 and 8,402.82 is: 12,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,283.96 : 27,405.20 = 8,402.82 : x
  2. Step 2: Convert to fraction form
    18,283.96/27,405.20 = 8,402.82/x
  3. Step 3: Cross multiply
    18,283.96x = 27,405.20 × 8,402.82
  4. Step 4: Simplify right side
    18,283.96x = 230,280,962.66
  5. Step 5: Solve for x
    x = 230,280,962.66/18,283.96
  6. Step 6: Final answer
    x = 12,594.70

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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.