Home / 13,380.67-19,989.62-8,662.24

Finding the Fourth Proportional to 13,380.67, 19,989.62 and 8,662.24

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Solution

The fourth proportional to 13,380.67, 19,989.62 and 8,662.24 is: 12,940.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.67 : 19,989.62 = 8,662.24 : x
  2. Step 2: Convert to fraction form
    13,380.67/19,989.62 = 8,662.24/x
  3. Step 3: Cross multiply
    13,380.67x = 19,989.62 × 8,662.24
  4. Step 4: Simplify right side
    13,380.67x = 173,154,968.41
  5. Step 5: Solve for x
    x = 173,154,968.41/13,380.67
  6. Step 6: Final answer
    x = 12,940.68

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.