Home / 20,724.49-28,598.90-11,771.97

Finding the Fourth Proportional to 20,724.49, 28,598.90 and 11,771.97

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Solution

The fourth proportional to 20,724.49, 28,598.90 and 11,771.97 is: 16,244.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.49 : 28,598.90 = 11,771.97 : x
  2. Step 2: Convert to fraction form
    20,724.49/28,598.90 = 11,771.97/x
  3. Step 3: Cross multiply
    20,724.49x = 28,598.90 × 11,771.97
  4. Step 4: Simplify right side
    20,724.49x = 336,665,392.83
  5. Step 5: Solve for x
    x = 336,665,392.83/20,724.49
  6. Step 6: Final answer
    x = 16,244.81

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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.