Home / 20,759.96-28,652.46-12,377

Finding the Fourth Proportional to 20,759.96, 28,652.46 and 12,377

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Solution

The fourth proportional to 20,759.96, 28,652.46 and 12,377 is: 17,082.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.96 : 28,652.46 = 12,377 : x
  2. Step 2: Convert to fraction form
    20,759.96/28,652.46 = 12,377/x
  3. Step 3: Cross multiply
    20,759.96x = 28,652.46 × 12,377
  4. Step 4: Simplify right side
    20,759.96x = 354,631,497.42
  5. Step 5: Solve for x
    x = 354,631,497.42/20,759.96
  6. Step 6: Final answer
    x = 17,082.47

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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.