Home / 20,116.06-27,760.91-12,156.76

Finding the Fourth Proportional to 20,116.06, 27,760.91 and 12,156.76

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Solution

The fourth proportional to 20,116.06, 27,760.91 and 12,156.76 is: 16,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.06 : 27,760.91 = 12,156.76 : x
  2. Step 2: Convert to fraction form
    20,116.06/27,760.91 = 12,156.76/x
  3. Step 3: Cross multiply
    20,116.06x = 27,760.91 × 12,156.76
  4. Step 4: Simplify right side
    20,116.06x = 337,482,720.25
  5. Step 5: Solve for x
    x = 337,482,720.25/20,116.06
  6. Step 6: Final answer
    x = 16,776.78

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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.