Home / 20,099.37-27,737.78-11,147.70

Finding the Fourth Proportional to 20,099.37, 27,737.78 and 11,147.70

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Solution

The fourth proportional to 20,099.37, 27,737.78 and 11,147.70 is: 15,384.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.37 : 27,737.78 = 11,147.70 : x
  2. Step 2: Convert to fraction form
    20,099.37/27,737.78 = 11,147.70/x
  3. Step 3: Cross multiply
    20,099.37x = 27,737.78 × 11,147.70
  4. Step 4: Simplify right side
    20,099.37x = 309,212,394.37
  5. Step 5: Solve for x
    x = 309,212,394.37/20,099.37
  6. Step 6: Final answer
    x = 15,384.18

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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.