Home / 20,116.11-27,760.19-12,156.87

Finding the Fourth Proportional to 20,116.11, 27,760.19 and 12,156.87

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Solution

The fourth proportional to 20,116.11, 27,760.19 and 12,156.87 is: 16,776.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.11 : 27,760.19 = 12,156.87 : x
  2. Step 2: Convert to fraction form
    20,116.11/27,760.19 = 12,156.87/x
  3. Step 3: Cross multiply
    20,116.11x = 27,760.19 × 12,156.87
  4. Step 4: Simplify right side
    20,116.11x = 337,476,960.22
  5. Step 5: Solve for x
    x = 337,476,960.22/20,116.11
  6. Step 6: Final answer
    x = 16,776.45

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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.