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Finding the Fourth Proportional to 18,057.92, 27,070.47 and 8,191.82

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Solution

The fourth proportional to 18,057.92, 27,070.47 and 8,191.82 is: 12,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,057.92 : 27,070.47 = 8,191.82 : x
  2. Step 2: Convert to fraction form
    18,057.92/27,070.47 = 8,191.82/x
  3. Step 3: Cross multiply
    18,057.92x = 27,070.47 × 8,191.82
  4. Step 4: Simplify right side
    18,057.92x = 221,756,485.23
  5. Step 5: Solve for x
    x = 221,756,485.23/18,057.92
  6. Step 6: Final answer
    x = 12,280.29

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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.