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Finding the Fourth Proportional to 18,312.60, 27,473.81 and 7,783.10

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Solution

The fourth proportional to 18,312.60, 27,473.81 and 7,783.10 is: 11,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.60 : 27,473.81 = 7,783.10 : x
  2. Step 2: Convert to fraction form
    18,312.60/27,473.81 = 7,783.10/x
  3. Step 3: Cross multiply
    18,312.60x = 27,473.81 × 7,783.10
  4. Step 4: Simplify right side
    18,312.60x = 213,831,234.33
  5. Step 5: Solve for x
    x = 213,831,234.33/18,312.60
  6. Step 6: Final answer
    x = 11,676.73

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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.