Home / 20,099.20-27,735.06-11,146.67

Finding the Fourth Proportional to 20,099.20, 27,735.06 and 11,146.67

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Solution

The fourth proportional to 20,099.20, 27,735.06 and 11,146.67 is: 15,381.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.20 : 27,735.06 = 11,146.67 : x
  2. Step 2: Convert to fraction form
    20,099.20/27,735.06 = 11,146.67/x
  3. Step 3: Cross multiply
    20,099.20x = 27,735.06 × 11,146.67
  4. Step 4: Simplify right side
    20,099.20x = 309,153,630.59
  5. Step 5: Solve for x
    x = 309,153,630.59/20,099.20
  6. Step 6: Final answer
    x = 15,381.39

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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.