Home / 20,724.83-28,599.25-11,771.16

Finding the Fourth Proportional to 20,724.83, 28,599.25 and 11,771.16

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Solution

The fourth proportional to 20,724.83, 28,599.25 and 11,771.16 is: 16,243.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,724.83 : 28,599.25 = 11,771.16 : x
  2. Step 2: Convert to fraction form
    20,724.83/28,599.25 = 11,771.16/x
  3. Step 3: Cross multiply
    20,724.83x = 28,599.25 × 11,771.16
  4. Step 4: Simplify right side
    20,724.83x = 336,646,288.77
  5. Step 5: Solve for x
    x = 336,646,288.77/20,724.83
  6. Step 6: Final answer
    x = 16,243.62

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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.