Home / 20,119.01-27,760.19-12,161.70

Finding the Fourth Proportional to 20,119.01, 27,760.19 and 12,161.70

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Solution

The fourth proportional to 20,119.01, 27,760.19 and 12,161.70 is: 16,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.01 : 27,760.19 = 12,161.70 : x
  2. Step 2: Convert to fraction form
    20,119.01/27,760.19 = 12,161.70/x
  3. Step 3: Cross multiply
    20,119.01x = 27,760.19 × 12,161.70
  4. Step 4: Simplify right side
    20,119.01x = 337,611,041.91
  5. Step 5: Solve for x
    x = 337,611,041.91/20,119.01
  6. Step 6: Final answer
    x = 16,780.70

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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.