Home / 13,982.10-20,971.02-6,959.82

Finding the Fourth Proportional to 13,982.10, 20,971.02 and 6,959.82

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Solution

The fourth proportional to 13,982.10, 20,971.02 and 6,959.82 is: 10,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.10 : 20,971.02 = 6,959.82 : x
  2. Step 2: Convert to fraction form
    13,982.10/20,971.02 = 6,959.82/x
  3. Step 3: Cross multiply
    13,982.10x = 20,971.02 × 6,959.82
  4. Step 4: Simplify right side
    13,982.10x = 145,954,524.42
  5. Step 5: Solve for x
    x = 145,954,524.42/13,982.10
  6. Step 6: Final answer
    x = 10,438.67

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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.