Home / 20,765.55-28,656.41-11,690.18

Finding the Fourth Proportional to 20,765.55, 28,656.41 and 11,690.18

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Solution

The fourth proportional to 20,765.55, 28,656.41 and 11,690.18 is: 16,132.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.55 : 28,656.41 = 11,690.18 : x
  2. Step 2: Convert to fraction form
    20,765.55/28,656.41 = 11,690.18/x
  3. Step 3: Cross multiply
    20,765.55x = 28,656.41 × 11,690.18
  4. Step 4: Simplify right side
    20,765.55x = 334,998,591.05
  5. Step 5: Solve for x
    x = 334,998,591.05/20,765.55
  6. Step 6: Final answer
    x = 16,132.42

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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.