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Finding the Fourth Proportional to 15,171.89, 22,763.24 and 7,779.83

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Solution

The fourth proportional to 15,171.89, 22,763.24 and 7,779.83 is: 11,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.89 : 22,763.24 = 7,779.83 : x
  2. Step 2: Convert to fraction form
    15,171.89/22,763.24 = 7,779.83/x
  3. Step 3: Cross multiply
    15,171.89x = 22,763.24 × 7,779.83
  4. Step 4: Simplify right side
    15,171.89x = 177,093,984.73
  5. Step 5: Solve for x
    x = 177,093,984.73/15,171.89
  6. Step 6: Final answer
    x = 11,672.51

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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.