Home / 20,192.89-27,869.18-12,127.09

Finding the Fourth Proportional to 20,192.89, 27,869.18 and 12,127.09

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Solution

The fourth proportional to 20,192.89, 27,869.18 and 12,127.09 is: 16,737.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.89 : 27,869.18 = 12,127.09 : x
  2. Step 2: Convert to fraction form
    20,192.89/27,869.18 = 12,127.09/x
  3. Step 3: Cross multiply
    20,192.89x = 27,869.18 × 12,127.09
  4. Step 4: Simplify right side
    20,192.89x = 337,972,054.09
  5. Step 5: Solve for x
    x = 337,972,054.09/20,192.89
  6. Step 6: Final answer
    x = 16,737.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.