Home / 10,942.10-16,425.30-8,487.80

Finding the Fourth Proportional to 10,942.10, 16,425.30 and 8,487.80

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Solution

The fourth proportional to 10,942.10, 16,425.30 and 8,487.80 is: 12,741.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,942.10 : 16,425.30 = 8,487.80 : x
  2. Step 2: Convert to fraction form
    10,942.10/16,425.30 = 8,487.80/x
  3. Step 3: Cross multiply
    10,942.10x = 16,425.30 × 8,487.80
  4. Step 4: Simplify right side
    10,942.10x = 139,414,661.34
  5. Step 5: Solve for x
    x = 139,414,661.34/10,942.10
  6. Step 6: Final answer
    x = 12,741.12

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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.