Home / 20,997.96-28,943.40-14,189.85

Finding the Fourth Proportional to 20,997.96, 28,943.40 and 14,189.85

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Solution

The fourth proportional to 20,997.96, 28,943.40 and 14,189.85 is: 19,559.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.96 : 28,943.40 = 14,189.85 : x
  2. Step 2: Convert to fraction form
    20,997.96/28,943.40 = 14,189.85/x
  3. Step 3: Cross multiply
    20,997.96x = 28,943.40 × 14,189.85
  4. Step 4: Simplify right side
    20,997.96x = 410,702,504.49
  5. Step 5: Solve for x
    x = 410,702,504.49/20,997.96
  6. Step 6: Final answer
    x = 19,559.16

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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.