Home / 15,778.05-21,773.55-8,704.50

Finding the Fourth Proportional to 15,778.05, 21,773.55 and 8,704.50

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Solution

The fourth proportional to 15,778.05, 21,773.55 and 8,704.50 is: 12,012.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.05 : 21,773.55 = 8,704.50 : x
  2. Step 2: Convert to fraction form
    15,778.05/21,773.55 = 8,704.50/x
  3. Step 3: Cross multiply
    15,778.05x = 21,773.55 × 8,704.50
  4. Step 4: Simplify right side
    15,778.05x = 189,527,865.98
  5. Step 5: Solve for x
    x = 189,527,865.98/15,778.05
  6. Step 6: Final answer
    x = 12,012.12

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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.