Home / 15,778.10-21,773.85-8,704.52

Finding the Fourth Proportional to 15,778.10, 21,773.85 and 8,704.52

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Solution

The fourth proportional to 15,778.10, 21,773.85 and 8,704.52 is: 12,012.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.10 : 21,773.85 = 8,704.52 : x
  2. Step 2: Convert to fraction form
    15,778.10/21,773.85 = 8,704.52/x
  3. Step 3: Cross multiply
    15,778.10x = 21,773.85 × 8,704.52
  4. Step 4: Simplify right side
    15,778.10x = 189,530,803.93
  5. Step 5: Solve for x
    x = 189,530,803.93/15,778.10
  6. Step 6: Final answer
    x = 12,012.27

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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.