Home / 15,778.14-21,773.98-8,704.50

Finding the Fourth Proportional to 15,778.14, 21,773.98 and 8,704.50

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Solution

The fourth proportional to 15,778.14, 21,773.98 and 8,704.50 is: 12,012.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.14 : 21,773.98 = 8,704.50 : x
  2. Step 2: Convert to fraction form
    15,778.14/21,773.98 = 8,704.50/x
  3. Step 3: Cross multiply
    15,778.14x = 21,773.98 × 8,704.50
  4. Step 4: Simplify right side
    15,778.14x = 189,531,608.91
  5. Step 5: Solve for x
    x = 189,531,608.91/15,778.14
  6. Step 6: Final answer
    x = 12,012.29

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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.