Home / 18,231.10-27,358.80-8,365.30

Finding the Fourth Proportional to 18,231.10, 27,358.80 and 8,365.30

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Solution

The fourth proportional to 18,231.10, 27,358.80 and 8,365.30 is: 12,553.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.10 : 27,358.80 = 8,365.30 : x
  2. Step 2: Convert to fraction form
    18,231.10/27,358.80 = 8,365.30/x
  3. Step 3: Cross multiply
    18,231.10x = 27,358.80 × 8,365.30
  4. Step 4: Simplify right side
    18,231.10x = 228,864,569.64
  5. Step 5: Solve for x
    x = 228,864,569.64/18,231.10
  6. Step 6: Final answer
    x = 12,553.53

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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.