Home / 20,773.96-31,160.94-5,191.58

Finding the Fourth Proportional to 20,773.96, 31,160.94 and 5,191.58

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Solution

The fourth proportional to 20,773.96, 31,160.94 and 5,191.58 is: 7,787.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.96 : 31,160.94 = 5,191.58 : x
  2. Step 2: Convert to fraction form
    20,773.96/31,160.94 = 5,191.58/x
  3. Step 3: Cross multiply
    20,773.96x = 31,160.94 × 5,191.58
  4. Step 4: Simplify right side
    20,773.96x = 161,774,486.93
  5. Step 5: Solve for x
    x = 161,774,486.93/20,773.96
  6. Step 6: Final answer
    x = 7,787.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.