Home / 20,116.08-27,756-12,156.75

Finding the Fourth Proportional to 20,116.08, 27,756 and 12,156.75

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Solution

The fourth proportional to 20,116.08, 27,756 and 12,156.75 is: 16,773.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.08 : 27,756 = 12,156.75 : x
  2. Step 2: Convert to fraction form
    20,116.08/27,756 = 12,156.75/x
  3. Step 3: Cross multiply
    20,116.08x = 27,756 × 12,156.75
  4. Step 4: Simplify right side
    20,116.08x = 337,422,753
  5. Step 5: Solve for x
    x = 337,422,753/20,116.08
  6. Step 6: Final answer
    x = 16,773.78

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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.