Home / 20,139.41-27,796.02-11,640.35

Finding the Fourth Proportional to 20,139.41, 27,796.02 and 11,640.35

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Solution

The fourth proportional to 20,139.41, 27,796.02 and 11,640.35 is: 16,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.41 : 27,796.02 = 11,640.35 : x
  2. Step 2: Convert to fraction form
    20,139.41/27,796.02 = 11,640.35/x
  3. Step 3: Cross multiply
    20,139.41x = 27,796.02 × 11,640.35
  4. Step 4: Simplify right side
    20,139.41x = 323,555,401.41
  5. Step 5: Solve for x
    x = 323,555,401.41/20,139.41
  6. Step 6: Final answer
    x = 16,065.78

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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.