Home / 20,902.06-28,844.84-11,949.76

Finding the Fourth Proportional to 20,902.06, 28,844.84 and 11,949.76

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Solution

The fourth proportional to 20,902.06, 28,844.84 and 11,949.76 is: 16,490.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.06 : 28,844.84 = 11,949.76 : x
  2. Step 2: Convert to fraction form
    20,902.06/28,844.84 = 11,949.76/x
  3. Step 3: Cross multiply
    20,902.06x = 28,844.84 × 11,949.76
  4. Step 4: Simplify right side
    20,902.06x = 344,688,915.24
  5. Step 5: Solve for x
    x = 344,688,915.24/20,902.06
  6. Step 6: Final answer
    x = 16,490.67

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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.