Home / 20,143.25-27,797.28-11,190.50

Finding the Fourth Proportional to 20,143.25, 27,797.28 and 11,190.50

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Solution

The fourth proportional to 20,143.25, 27,797.28 and 11,190.50 is: 15,442.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.25 : 27,797.28 = 11,190.50 : x
  2. Step 2: Convert to fraction form
    20,143.25/27,797.28 = 11,190.50/x
  3. Step 3: Cross multiply
    20,143.25x = 27,797.28 × 11,190.50
  4. Step 4: Simplify right side
    20,143.25x = 311,065,461.84
  5. Step 5: Solve for x
    x = 311,065,461.84/20,143.25
  6. Step 6: Final answer
    x = 15,442.67

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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.