Home / 20,719.08-28,591.29-11,765.43

Finding the Fourth Proportional to 20,719.08, 28,591.29 and 11,765.43

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Solution

The fourth proportional to 20,719.08, 28,591.29 and 11,765.43 is: 16,235.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.08 : 28,591.29 = 11,765.43 : x
  2. Step 2: Convert to fraction form
    20,719.08/28,591.29 = 11,765.43/x
  3. Step 3: Cross multiply
    20,719.08x = 28,591.29 × 11,765.43
  4. Step 4: Simplify right side
    20,719.08x = 336,388,821.10
  5. Step 5: Solve for x
    x = 336,388,821.10/20,719.08
  6. Step 6: Final answer
    x = 16,235.70

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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.