Home / 13,940.98-20,921.88-8,683.66

Finding the Fourth Proportional to 13,940.98, 20,921.88 and 8,683.66

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Solution

The fourth proportional to 13,940.98, 20,921.88 and 8,683.66 is: 13,031.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.98 : 20,921.88 = 8,683.66 : x
  2. Step 2: Convert to fraction form
    13,940.98/20,921.88 = 8,683.66/x
  3. Step 3: Cross multiply
    13,940.98x = 20,921.88 × 8,683.66
  4. Step 4: Simplify right side
    13,940.98x = 181,678,492.48
  5. Step 5: Solve for x
    x = 181,678,492.48/13,940.98
  6. Step 6: Final answer
    x = 13,031.97

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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.